{"title":"Sky-Watcher Quattro Imaging Newtonians","description":"\u003cp\u003eSky-Watcher Quattro imaging Newtonians are fast f\/4 reflectors built for deep-sky astrophotography. Apertures range from the Quattro 150P (6\") through the 200P and 250P to the Quattro 300P (12\"), giving short exposure times and plenty of resolution on galaxies and nebulae.\u003c\/p\u003e\u003cp\u003eThe matching Quattro Coma Corrector removes coma toward the edge of the frame, so stars stay round across the sensor.\u003c\/p\u003e","products":[{"product_id":"sky-watcher-quattro-200p-imaging-newtonian-8-205-mm","title":"Sky-Watcher Quattro 200P Imaging Newtonian 8\" (205 mm)","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e203mm (8-inch) Newtonian Reflector Astrograph\u003c\/li\u003e\n\u003cli\u003eFast f\/4 Focal Ratio for Short Exposures\u003c\/li\u003e\n\u003cli\u003e800mm Focal Length\u003c\/li\u003e\n\u003cli\u003e94% Reflectivity Radiant™ Aluminum Quartz (RAQ) Coatings\u003c\/li\u003e\n\u003cli\u003e2-inch Dual-Speed Crayford Focuser\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eSky-Watcher Quattro 200P Imaging Newtonian\u003c\/h2\u003e\n\u003cp\u003eThe Sky-Watcher Quattro 200P Imaging Newtonian combines a large 203mm primary mirror with a very fast f\/4 focal ratio to dramatically reduce exposure times for deep-sky astrophotography. Its 800mm focal length provides an ideal image scale for capturing detail in galaxies and nebulae, while the borosilicate mirror's Radiant Aluminum Quartz (RAQ) coatings ensure 94% reflectivity for brighter, higher-contrast images. With a total weight of just 21 lbs, this optical tube is engineered for imagers who need large-aperture light gathering on a mid-range equatorial mount.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eCapture Images 6x Faster with an f\/4 Optical Design\u003c\/h3\u003e\n\u003cp\u003eThe Quattro 200P's f\/4 focal ratio is its defining feature, gathering light significantly faster than standard f\/10 Schmidt-Cassegrains. This speed allows you to capture detailed, high signal-to-noise images of faint deep-sky objects in a fraction of the time, reducing demands on your mount's tracking and minimizing guiding errors. This makes it possible to complete complex projects like the full expanse of the Orion Nebula (M42) or the Andromeda Galaxy (M31) in a single night.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e94% Reflectivity and an Oversized 70mm Secondary\u003c\/h3\u003e\n\u003cp\u003eSky-Watcher uses proprietary Radiant™ Aluminum Quartz (RAQ™) coatings on the primary mirror, achieving 94% reflectivity for maximum light transmission. This is paired with an oversized 70mm secondary mirror that provides a fully illuminated field for large sensors, including full-frame DSLRs and dedicated astronomy cameras. This combination prevents vignetting and ensures the edges of your frame are just as bright as the center.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBorosilicate Primary Mirror:\u003c\/strong\u003e Provides excellent thermal stability, reducing the time needed for the telescope to acclimate to ambient temperatures and maintaining focus throughout your imaging session.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e34% Secondary Obstruction:\u003c\/strong\u003e The 70mm secondary creates a 34% central obstruction by diameter, a necessary trade-off for providing full illumination to large camera sensors in a fast optical system.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eImaging-Ready with a 2-inch Dual-Speed Focuser\u003c\/h3\u003e\n\u003cp\u003eUnlike visual-oriented Newtonians, the Quattro 200P comes equipped from the factory for astrophotography. The 2-inch, 10:1 dual-speed Crayford focuser allows for precise, repeatable focusing adjustments critical for achieving sharp stars. The robust design handles the weight of a full imaging train, including a camera, filter wheel, and off-axis guider, without flexure or slippage. The OTA also includes a 9x50 straight-through finderscope, tube rings, and a V-style dovetail for immediate mounting.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eVisual Astronomy: A Capable Dual-Purpose Scope\u003c\/h3\u003e\n\u003cp\u003eWhile designed as an astrograph, the Quattro 200P's large 203mm aperture also makes it a powerful instrument for visual observation. With a limiting magnitude of 14, it resolves fine detail in globular clusters like the Hercules Cluster (M13) and reveals faint structures in distant galaxies. The fast f\/4 system delivers exceptionally wide, bright fields of view at low power, creating an immersive \"spacewalk\" experience when sweeping through the Milky Way.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eThe Trade-Off: Coma and the Need for a Corrector\u003c\/h3\u003e\n\u003cp\u003eA key characteristic of fast Newtonian telescopes is coma, an optical aberration that causes stars at the edge of the field to appear elongated. The Quattro 200P is no exception. While visually acceptable, for astrophotography achieving pin-point stars across the entire frame requires the use of an optional coma corrector. This is a critical accessory for anyone serious about imaging with this OTA and is necessary to unlock its full potential.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of mount is required for the Sky-Watcher Quattro 200P?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith an OTA weight of 21 lbs, the Quattro 200P requires a mid-range equatorial mount for astrophotography. A mount with a payload capacity of at least 30-40 lbs, such as the Sky-Watcher EQ6-R Pro or a similar class mount, is recommended to handle the additional weight of a camera, guide scope, and other accessories while maintaining precise tracking.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs a coma corrector necessary for the Quattro 200P?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, for serious astrophotography, a coma corrector is essential. The fast f\/4 optical system inherently produces coma, which will make stars at the edge of your images appear distorted. For visual use, it is less of an issue, but for imaging, a coma corrector is required to achieve sharp, round stars across the entire sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Quattro 200P perform on planets like Jupiter in an 8\" f\/4 system?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Quattro 200P's 800mm focal length is relatively short for planetary imaging, which typically benefits from longer focal lengths. However, you can achieve excellent results by adding a 3x or 5x Barlow lens to increase the effective focal length. The 203mm aperture provides a high theoretical resolution (0.57 arc-seconds Dawes Limit), allowing you to resolve Jupiter's main cloud bands, the Great Red Spot, and shadow transits of its moons.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Quattro 200P for visual astronomy?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. The large 203mm aperture and bright f\/4 optics provide stunning, wide-field views of deep-sky objects. It excels at observing large nebulae like the North American Nebula (NGC 7000) and sweeping through the dense star fields of the Milky Way. While optimized for imaging, it is a very capable visual instrument.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow often will I need to collimate the Quattro 200P?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eLike all Newtonian reflectors, the Quattro 200P will require periodic collimation (alignment of the mirrors). The fast f\/4 focal ratio is less forgiving of collimation errors than slower systems. It's good practice to check collimation before every imaging session, especially if the telescope has been transported. Using a laser collimator can make this process quick and straightforward.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the advantage of the 70mm secondary mirror?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe oversized 70mm secondary mirror is crucial for astrophotography with modern cameras. It creates a large, fully illuminated image circle that can cover the sensors of APS-C and even full-frame cameras without causing vignetting (darkening at the corners of the image). This ensures your entire frame is evenly lit, which is critical for producing high-quality images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eNewtonian\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Aperture\u003c\/td\u003e\n\u003ctd\u003e203mm (8\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e800mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMirror Coatings\u003c\/td\u003e\n\u003ctd\u003eRadiant Aluminum Quartz (RAQ)™ with 94% reflectivity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGlass Type\u003c\/td\u003e\n\u003ctd\u003eBorosilicate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSecondary Mirror Diameter\u003c\/td\u003e\n\u003ctd\u003e70mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSecondary Obstruction (by diameter)\u003c\/td\u003e\n\u003ctd\u003e34%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSecondary Obstruction (by area)\u003c\/td\u003e\n\u003ctd\u003e12%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDawes Limit\u003c\/td\u003e\n\u003ctd\u003e0.57 arc-seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRayleigh Limit\u003c\/td\u003e\n\u003ctd\u003e0.69 arc-seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLimiting Magnitude\u003c\/td\u003e\n\u003ctd\u003e14\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Magnification\u003c\/td\u003e\n\u003ctd\u003e400x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum Magnification\u003c\/td\u003e\n\u003ctd\u003e29x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser\u003c\/td\u003e\n\u003ctd\u003e2\" Dual-Speed Crayford (10:1)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Length\u003c\/td\u003e\n\u003ctd\u003e28\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Outer Diameter\u003c\/td\u003e\n\u003ctd\u003e9.375\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Weight (with accessories)\u003c\/td\u003e\n\u003ctd\u003e21 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinder Scope\u003c\/td\u003e\n\u003ctd\u003e9x50 Straight-Through\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Accessories\u003c\/td\u003e\n\u003ctd\u003eTube Rings \u0026amp; V-style Dovetail Plate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUPC\u003c\/td\u003e\n\u003ctd\u003e050234112109\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eQuattro 200P Newtonian OTA\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e9x50 Finderscope with Bracket\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e2\" Dual-Speed Crayford Focuser\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e2\" to 1.25\" Eyepiece Adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eTube Rings\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 2\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eV-style Dovetail Plate\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Sky-Watcher_Newtonian_Dobsonian_Collimation_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Collimation Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/sky-watcher-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eSky-Watcher 2-Year Limited Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sky-Watcher","offers":[{"title":"Default Title","offer_id":44967190135069,"sku":"SW-S11210","price":1290.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Sky-Watcher-Quattro-200P-Imaging-Newtonian-8inch-205-mm-S11210-1__46916.1594170760.1280.1280.jpg?v=1684338343"},{"product_id":"sky-watcher-quattro-250p-imaging-newtonian-10-254-mm","title":"Sky-Watcher Quattro 250P Imaging Newtonian 10\" (254 mm)","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e254mm (10-inch) Newtonian Reflector Astrograph\u003c\/li\u003e\n\u003cli\u003e1000mm Focal Length\u003c\/li\u003e\n\u003cli\u003eFast f\/4 Focal Ratio\u003c\/li\u003e\n\u003cli\u003e94% Reflectivity Radiant™ Aluminum Quartz (RAQ) Coatings\u003c\/li\u003e\n\u003cli\u003e2-inch Dual-Speed Crayford Focuser\u003c\/li\u003e\n\u003cli\u003e9x50 Finderscope\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eSky-Watcher Quattro 250P Imaging Newtonian\u003c\/h2\u003e\n\u003cp\u003eThe Sky-Watcher Quattro 250P Imaging Newtonian combines a large 254mm aperture with a fast f\/4 focal ratio and 1000mm focal length to create a powerful light-gathering instrument for serious astrophotography. Its borosilicate primary mirror features Radiant™ Aluminum Quartz (RAQ) coatings that achieve 94% reflectivity, ensuring maximum light reaches your sensor. With a total OTA weight of 36.5 lbs, this astrograph is engineered to acquire deep-sky data in a fraction of the time required by slower optical systems.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eCapture Images 6x Faster with an f\/4 Optical System\u003c\/h3\u003e\n\u003cp\u003eThe defining feature of the Quattro 250P is its aggressive f\/4 focal ratio. This optical speed allows you to gather the same amount of light in a 5-minute exposure as a typical 8-inch f\/10 Schmidt-Cassegrain would in 30 minutes. This 6x speed advantage dramatically reduces total imaging time, minimizes guiding errors, and lets you complete complex projects in a single night.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA 254mm Aperture for High-Resolution Visuals and Imaging\u003c\/h3\u003e\n\u003cp\u003eWith a 254mm (10-inch) primary mirror, the Quattro 250P resolves detail down to a Dawes' limit of 0.46 arcseconds, separating tight double stars and revealing fine structures in planetary atmospheres. For deep-sky imagers, this large aperture translates into brighter images and higher signal-to-noise ratios, pulling faint outer structures from galaxies and resolving individual stars in distant clusters. Visually, the scope can reach a limiting magnitude of 14.5 under dark skies.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eOptimized for Full-Frame Sensors with an 89mm Secondary Mirror\u003c\/h3\u003e\n\u003cp\u003eTo fully illuminate the large sensors in modern DSLR and dedicated astronomy cameras, the Quattro 250P employs an oversized 89mm secondary mirror. While this results in a 35% central obstruction by diameter, it provides a bright, unvignetted field of view essential for flat-field imaging. This design choice prioritizes photon collection over the subtle contrast loss on planetary targets, a trade-off that is ideal for its primary role as a deep-sky astrograph. An optional coma corrector is recommended to achieve sharp stars across the entire frame.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-Speed Focuser:\u003c\/strong\u003e The included 2-inch, 10:1 dual-speed Crayford focuser allows for precise, repeatable focus adjustments critical for sharp stars.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReady to Mount:\u003c\/strong\u003e The optical tube comes complete with mounting rings and a V-style dovetail bar for immediate attachment to a compatible equatorial mount.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinder Included:\u003c\/strong\u003e A 9x50 optical finderscope provides a wide field of view to easily locate and center targets before imaging.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of mount do I need for the Sky-Watcher Quattro 250P?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Quattro 250P has an OTA weight of 36.5 lbs. For astrophotography, you should use a mount with a payload capacity of at least 50-60 lbs to ensure stability and precise tracking. Mounts in the Sky-Watcher EQ6-R Pro or a similar class are the recommended starting point for this instrument.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs a coma corrector required for the Quattro 250P?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, for serious astrophotography, a coma corrector is essential. The fast f\/4 focal ratio of the Quattro 250P will exhibit significant coma (elongated stars) at the edges of the field of view without correction. Adding a matched coma corrector will produce sharp, point-like stars across the entire image sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Quattro 250P perform on the Orion Nebula (M42) with a full-frame camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Quattro 250P is an excellent choice for large targets like the Orion Nebula (M42). Its 1000mm focal length will frame the nebula and its surrounding structures perfectly on a full-frame sensor. The fast f\/4 optics will allow you to capture the faint outer nebulosity in very short exposures while retaining enough dynamic range to resolve the bright Trapezium cluster at its core.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Quattro 250P for visual astronomy?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. While designed for imaging, the large 254mm aperture makes it a fantastic visual instrument. It will provide bright, detailed views of the Moon, planets, and deep-sky objects. The 35% central obstruction is a compromise for imaging illumination and will have a minor impact on the highest-contrast planetary views compared to a long-focus Newtonian, but the deep-sky views will be expansive and bright.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does the 35% secondary obstruction of the Quattro 250P mean in practice?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 35% secondary obstruction is a direct result of the large 89mm secondary mirror needed to illuminate imaging sensors without vignetting. For imaging, this is a positive design feature. For visual use, it causes a slight reduction in peak contrast on very high-resolution targets like Jupiter's cloud bands compared to a scope with a smaller obstruction, but its effect is minimal for most deep-sky observing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the included focuser on the Quattro 250P handle heavy cameras?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe included 2-inch dual-speed Crayford focuser is robust and provides smooth, precise focusing. It can handle most DSLRs and many dedicated astronomy cameras with filter wheels. For very heavy imaging trains, some users may choose to upgrade to a rack-and-pinion style focuser for increased load capacity and zero slippage.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eNewtonian\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Aperture\u003c\/td\u003e\n\u003ctd\u003e254mm (10\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e1000mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMirror Coatings\u003c\/td\u003e\n\u003ctd\u003eRadiant Aluminum Quartz (RAQ)™ with 94% reflectivity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGlass Type\u003c\/td\u003e\n\u003ctd\u003eBorosilicate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSecondary Mirror Diameter\u003c\/td\u003e\n\u003ctd\u003e89mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSecondary Obstruction (by diameter)\u003c\/td\u003e\n\u003ctd\u003e35%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSecondary Obstruction (by area)\u003c\/td\u003e\n\u003ctd\u003e12%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDawes Limit\u003c\/td\u003e\n\u003ctd\u003e0.46 arcseconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRayleigh Limit\u003c\/td\u003e\n\u003ctd\u003e0.55 arcseconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLimiting Magnitude\u003c\/td\u003e\n\u003ctd\u003e14.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum Magnification\u003c\/td\u003e\n\u003ctd\u003e36x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Magnification\u003c\/td\u003e\n\u003ctd\u003e500x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser\u003c\/td\u003e\n\u003ctd\u003e2\" Dual Speed Crayford\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Length\u003c\/td\u003e\n\u003ctd\u003e36.5\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Outer Diameter\u003c\/td\u003e\n\u003ctd\u003e11.375\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Weight (with accessories)\u003c\/td\u003e\n\u003ctd\u003e36.5 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinder Scope\u003c\/td\u003e\n\u003ctd\u003e9x50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Accessories\u003c\/td\u003e\n\u003ctd\u003eTube Rings \u0026amp; V-style Dovetail Plate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUPC\u003c\/td\u003e\n\u003ctd\u003e050234112208\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eQuattro 250P Newtonian OTA\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e2\" Dual-Speed 10:1 Crayford Focuser\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e2\" to 1.25\" Eyepiece Adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e9x50 Finderscope with Bracket\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eTube Rings\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 2\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eV-style Dovetail Plate\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Sky-Watcher_Quattro_200P_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Quattro Imaging Newtonian Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Sky-Watcher_Newtonian_Dobsonian_Collimation_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Newtonian Collimation Guide\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/sky-watcher-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eSky-Watcher 2-Year Limited Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sky-Watcher","offers":[{"title":"Default Title","offer_id":44967190200605,"sku":"SW-S11220","price":1840.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Sky-Watcher-Quattro-250P-Imaging-Newtonian-10inch-254-mm-S11220-1__23353.1594170761.1280.1280.jpg?v=1684338355"},{"product_id":"sky-watcher-quattro-300p-imaging-newtonian-12-305-mm","title":"Sky-Watcher Quattro 300P Imaging Newtonian 12\" (305 mm)","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e305mm (12\") Newtonian Reflector Astrograph\u003c\/li\u003e\n\u003cli\u003e1200mm Focal Length\u003c\/li\u003e\n\u003cli\u003eFast f\/4 Focal Ratio\u003c\/li\u003e\n\u003cli\u003e94% Reflectivity Radiant™ Aluminum Quartz (RAQ™) Coatings\u003c\/li\u003e\n\u003cli\u003e57 lb. Optical Tube Assembly Weight\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eSky-Watcher Quattro 300P Imaging Newtonian\u003c\/h2\u003e\n\u003cp\u003eThe Sky-Watcher Quattro 300P Imaging Newtonian combines a massive 305mm primary mirror with a fast f\/4 focal ratio to create a powerful astrograph for deep-sky imaging. Its 1200mm focal length is ideal for capturing detail in galaxies and nebulae, while the 94% reflectivity from its Radiant™ Aluminum Quartz (RAQ)™ coatings ensures maximum light reaches your sensor. This optical tube, weighing 57 lbs, is built for serious imagers seeking a significant aperture advantage without the extreme focal lengths of other designs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eFast f\/4 Imaging and 1200mm Focal Length\u003c\/h3\u003e\n\u003cp\u003eThe key advantage of the Quattro 300P is its f\/4 native focal ratio. This optical speed allows you to capture deep-sky objects with significantly shorter exposure times compared to slower f\/ratio telescopes, reducing demands on your mount's tracking and maximizing your time under clear skies. The 1200mm focal length provides the magnification needed to frame and resolve details in a huge range of deep-sky targets.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e305mm Aperture with 94% Reflectivity Coatings\u003c\/h3\u003e\n\u003cp\u003eWith a 305mm (12-inch) borosilicate primary mirror, the Quattro 300P gathers 44% more light than the next size down, translating directly to brighter images and the ability to capture fainter details. Sky-Watcher’s proprietary Radiant™ Aluminum Quartz (RAQ)™ coatings deliver 94% reflectivity, ensuring that the light collected by the large primary is efficiently transmitted to the focal plane. This combination provides the high-contrast, brilliant views needed for both imaging and visual observation up to a practical maximum of 600x.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eImaging-Optimized Design: 102mm Secondary Mirror\u003c\/h3\u003e\n\u003cp\u003eTo fully illuminate the large sensors in modern DSLRs and dedicated astronomy cameras, the Quattro 300P uses an oversized 102mm secondary mirror. This minimizes vignetting and provides a bright, even field of view, which is critical for astrophotography. While this results in a 33% central obstruction by diameter, it's a necessary trade-off for superior full-frame imaging capability. For the sharpest stars across the entire frame, an optional coma corrector is recommended.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eQuattro 300P vs. a Standard 8\" SCT\u003c\/h3\u003e\n\u003cp\u003eWhen choosing an imaging platform, many consider a classic Schmidt-Cassegrain. The Quattro 300P offers a fundamentally different approach focused on speed.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExposure Speed:\u003c\/strong\u003e The Quattro's primary advantage is its f\/4 focal ratio. As stated in its documentation, it can achieve the same exposure depth up to 6 times faster than a typical 8-inch f\/10 SCT, drastically reducing imaging time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAperture and Light Gathering:\u003c\/strong\u003e With its 305mm mirror, the Quattro 300P has over double the light-collecting area of a 203mm (8\") telescope, resulting in brighter, higher-resolution images of faint objects.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eField of View:\u003c\/strong\u003e The Quattro's 1200mm focal length provides a much wider field of view than the typical 2000mm+ focal length of an 8\" SCT, making it better suited for large nebulae and star clusters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrade-offs:\u003c\/strong\u003e The SCT is a more compact, sealed system that is less prone to dust and requires less frequent collimation. The Quattro requires careful collimation and an optional coma corrector for peak performance but delivers unparalleled speed and aperture for its cost.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eMechanical Build and Included Accessories\u003c\/h3\u003e\n\u003cp\u003eThe Quattro 300P features a robust rolled steel optical tube with a 14.25\" outer diameter, finished in Sky-Watcher's signature Black Diamond coating. Focusing is handled by a 2\" dual-speed 10:1 Crayford-style focuser for precise adjustments. The package is ready to mount, including a pair of tube rings and a D-style dovetail rail, along with a 9x50 optical finderscope to help locate targets.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of mount is required for the Sky-Watcher Quattro 300P?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Quattro 300P optical tube assembly weighs 57 lbs. For serious astrophotography, you will need a robust equatorial mount with a payload capacity of at least 80-90 lbs to ensure stability and precise tracking. Mounts in the Sky-Watcher EQ8-R Pro or similar class are recommended.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Quattro 300P perform on planetary imaging?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile designed for deep-sky imaging, the Quattro 300P's large 305mm aperture and 0.38 arc-second Dawes limit allow it to resolve fine planetary detail. Its 1200mm focal length is shorter than ideal for planets, so you will need to use a 3x or 5x Barlow lens to increase the effective focal length and achieve the necessary image scale for capturing features on Jupiter or Saturn.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs a coma corrector necessary for the Quattro 300P?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor astrophotography, especially with sensors larger than APS-C, a coma corrector is highly recommended. The fast f\/4 focal ratio of a Newtonian telescope naturally produces coma, an aberration that elongates stars at the edge of the field. A corrector will ensure sharp, point-like stars across the entire image.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Sky-Watcher Quattro 300P for visual astronomy?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. While optimized for imaging, the massive 305mm aperture makes it a fantastic visual instrument. It provides bright, detailed views of everything from faint galaxies to globular clusters. With a limiting magnitude of 14.9, it excels at revealing faint deep-sky objects from a dark sky site.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the advantage of the 102mm secondary mirror on the Quattro 300P?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe oversized 102mm secondary mirror provides a larger, fully illuminated field of view at the focal plane. This is critical for astrophotography with full-frame DSLR or CCD\/CMOS cameras, as it prevents vignetting (darkening of the corners) and ensures even illumination across the entire sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I collimate the Sky-Watcher Quattro 300P?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eLike all Newtonian reflectors, the Quattro 300P requires periodic collimation (alignment of the mirrors). This is typically done using a laser collimator or a Cheshire eyepiece. You will adjust the tilt of the secondary mirror (under the focuser) and the primary mirror (at the back of the tube) to ensure the optical path is perfectly aligned for sharp images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eUPC\u003c\/td\u003e\n\u003ctd\u003e050234112307\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eNewtonian\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Aperture\u003c\/td\u003e\n\u003ctd\u003e305mm (12\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e1200mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMirror Coatings\u003c\/td\u003e\n\u003ctd\u003eRadiant Aluminum Quartz (RAQ)™ coatings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMirror Reflectivity\u003c\/td\u003e\n\u003ctd\u003e94%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGlass Type\u003c\/td\u003e\n\u003ctd\u003eBorosilicate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Mirror Edge Thickness\u003c\/td\u003e\n\u003ctd\u003e38mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSecondary Mirror Diameter\u003c\/td\u003e\n\u003ctd\u003e102mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSecondary Obstruction (by diameter)\u003c\/td\u003e\n\u003ctd\u003e33%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSecondary Obstruction (by area)\u003c\/td\u003e\n\u003ctd\u003e11%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser\u003c\/td\u003e\n\u003ctd\u003e2\" Dual-Speed Crayford\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDawes Limit\u003c\/td\u003e\n\u003ctd\u003e0.38 arc-seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRayleigh Limit\u003c\/td\u003e\n\u003ctd\u003e0.46 arc-seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLimiting Magnitude\u003c\/td\u003e\n\u003ctd\u003e14.9\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum Magnification\u003c\/td\u003e\n\u003ctd\u003e43x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Magnification\u003c\/td\u003e\n\u003ctd\u003e600x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Length\u003c\/td\u003e\n\u003ctd\u003e42.5\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Outer Diameter\u003c\/td\u003e\n\u003ctd\u003e14.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Weight (with accessories)\u003c\/td\u003e\n\u003ctd\u003e57 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eQuattro 300P OTA\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e9x50 Finderscope\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eTube Rings\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 2\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eD-Style Dovetail Rail\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e2\" to 1.25\" Eyepiece Adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Sky-Watcher_Quattro_200P_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Sky-Watcher Quattro 300P Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/sky-watcher-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eSky-Watcher 2-Year Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sky-Watcher","offers":[{"title":"Default Title","offer_id":44967190233373,"sku":"SW-S11230","price":2770.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Sky-Watcher-Quattro-300P-Imaging-Newtonian-12inch-305-mm-S11230-1__45761.1594170762.1280.1280.jpg?v=1684338368"},{"product_id":"sky-watcher-quattro-coma-corrector","title":"Sky-Watcher Quattro Coma Corrector","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eCorrects coma in fast Newtonian telescopes\u003c\/li\u003e\n\u003cli\u003eDelivers pinpoint stars across the entire field of view\u003c\/li\u003e\n\u003cli\u003eMaintains the telescope's native focal length and magnification\u003c\/li\u003e\n\u003cli\u003eOptimized for wide-field astrophotography\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eSky-Watcher Quattro Coma Corrector\u003c\/h2\u003e\n\u003cp\u003eThe Sky-Watcher Quattro Coma Corrector is an essential optical accessory engineered to eliminate the inherent comatic aberration in fast Newtonian astrographs. It delivers stunningly sharp, pinpoint stars from the center to the very edge of the field of view. This corrector ensures that the native focal length and magnification of your telescope remain completely unaltered, preserving your original image scale for wide-field astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eEliminate Coma for Edge-to-Edge Field Sharpness\u003c\/h3\u003e\n\u003cp\u003eFast Newtonian reflectors, like the Sky-Watcher Quattro series, produce a visual artifact known as coma, which distorts stars at the edge of the field into comet-like shapes. The Quattro Coma Corrector's optical design specifically counteracts this aberration, transforming distorted peripheral stars into the sharp, round points required for high-resolution imaging. This allows you to use your entire imaging sensor without cropping away compromised data.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003ePreserve Your Telescope's Native Magnification\u003c\/h3\u003e\n\u003cp\u003eUnlike reducer\/correctors that shorten your telescope's focal length, the Sky-Watcher Quattro Coma Corrector functions at a 1x magnification. This is a critical feature for imagers who have carefully matched their camera and telescope for an optimal image scale. You get the full benefit of coma correction without changing the field of view or resolution your optical system was designed for.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eOptimized for Wide-Field Imaging\u003c\/h3\u003e\n\u003cp\u003eThis corrector is designed to illuminate large imaging sensors, making it the ideal match for wide-field targets like the Andromeda Galaxy (M31) or the vast hydrogen clouds of the North American Nebula (NGC 7000). By ensuring the entire corrected field is sharp, the Quattro Coma Corrector enables you to produce clean, professional-grade astrophotographs that are free of distracting optical errors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the primary function of the Sky-Watcher Quattro Coma Corrector?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary function of the Sky-Watcher Quattro Coma Corrector is to correct for \u003cstrong\u003ecoma\u003c\/strong\u003e, an optical aberration inherent in fast Newtonian telescopes. This results in sharp, pinpoint stars across the entire photographic field, especially near the edges.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the Quattro Coma Corrector change my telescope's focal ratio?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, it does not. The Sky-Watcher Quattro Coma Corrector is a \u003cstrong\u003e1x corrector\u003c\/strong\u003e, which means it does not alter the telescope's native focal length or focal ratio. Your f\/4 telescope will remain f\/4, preserving your original image scale and field of view.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the Quattro Coma Corrector improve my images of the Rho Ophiuchi cloud complex with an f\/4 Newtonian?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhen imaging a dense, wide starfield like the Rho Ophiuchi region with a fast f\/4 Newtonian, stars at the edge of the frame would normally appear stretched and comet-shaped due to coma. The Quattro Coma Corrector corrects this, ensuring that the thousands of stars in the field, from the bright star Antares to the faintest background members, are rendered as sharp, round points across your entire sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Sky-Watcher Quattro Coma Corrector only for Sky-Watcher telescopes?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile it is optically matched for the Sky-Watcher Quattro series of imaging Newtonians, this coma corrector can often be used successfully with other fast Newtonian telescopes. However, achieving optimal results depends on matching the corrector's required back focus, which may require additional spacers or adapters for non-Quattro telescopes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need a coma corrector for visual observing, or is it just for imaging?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile coma is most obvious in astrophotography, it is also visible through an eyepiece, especially with low-power, wide-field eyepieces. Using the Sky-Watcher Quattro Coma Corrector for visual work can provide a more pleasing, \"refractor-like\" view, with sharp stars across the entire field of view, not just in the center.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill I need to add spacers to achieve the correct back focus with the Quattro Coma Corrector?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAchieving the correct back focus (the distance from the corrector's flange to the camera sensor) is critical for its performance. Whether you need spacers depends on your specific camera and imaging train configuration. The corrector is designed to reach focus with standard DSLRs and dedicated astronomy cameras, but you should always confirm the required back focus distance for your setup.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCorrector Type\u003c\/td\u003e\n\u003ctd\u003eComa Corrector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnification Factor\u003c\/td\u003e\n\u003ctd\u003e1x (Unaltered)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Application\u003c\/td\u003e\n\u003ctd\u003eAstrophotography with fast Newtonian Telescopes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eSky-Watcher Quattro Coma Corrector\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDust Caps\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 2\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/sky-watcher-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eSky-Watcher 2-Year Limited Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sky-Watcher","offers":[{"title":"Default Title","offer_id":44967191675165,"sku":"SW-S20204","price":680.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Sky-Watcher-Quattro-Coma-Corrector-S20204-1__76015.1594170794.1280.1280.jpg?v=1684338537"},{"product_id":"sky-watcher-quattro-150p-imaging-newtonian-6-150mm","title":"Sky-Watcher Quattro 150P Imaging Newtonian 6\" (150mm)","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e150mm (6\") Primary Aperture\u003c\/li\u003e\n\u003cli\u003eFast f\/3.9 Focal Ratio\u003c\/li\u003e\n\u003cli\u003e600mm Focal Length\u003c\/li\u003e\n\u003cli\u003e2\" Dual-Speed Crayford Focuser\u003c\/li\u003e\n\u003cli\u003eComa Corrector\/Reducer Included\u003c\/li\u003e\n\u003cli\u003e12.6-pound Optical Tube Weight\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eSky-Watcher Quattro 150P Imaging Newtonian\u003c\/h2\u003e\n\u003cp\u003eThe Sky-Watcher Quattro 150P Imaging Newtonian combines a 150mm primary mirror and a fast f\/3.9 focal ratio to create a dedicated astrograph for deep-sky imaging. Its 600mm focal length is ideal for capturing wide-field nebulae and galaxies, while the proprietary mirror coatings deliver 94% reflectivity for bright, high-contrast images. Weighing just 12.6 pounds, this optical tube is a portable imaging solution that delivers results far above its class.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eCapture Images 6x Faster at f\/3.9\u003c\/h3\u003e\n\u003cp\u003eThe defining feature of the Quattro 150P is its aggressive f\/3.9 focal ratio. This optical speed allows you to gather significantly more light in a shorter time, reducing exposure times by a factor of six compared to a standard 8-inch f\/10 Schmidt-Cassegrain. This means less time battling tracking errors and changing sky conditions, enabling you to complete complex projects in a single night.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eOptimized Optics for Full-Frame Sensors\u003c\/h3\u003e\n\u003cp\u003eSky-Watcher engineered the Quattro 150P specifically for astrophotography. The 150mm borosilicate primary mirror is paired with an oversized 64mm secondary mirror, providing full-frame illumination and preventing vignetting on larger DSLR and dedicated astronomy camera sensors. The included coma corrector ensures sharp, point-like stars across the entire field of view, a critical accessory for any fast Newtonian.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e94% Reflectivity Coatings:\u003c\/strong\u003e Sky-Watcher’s Radiant™ Aluminum Quartz (RAQ™) coatings maximize light transmission for brighter images and higher contrast.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e42% Central Obstruction:\u003c\/strong\u003e While the large secondary mirror is essential for imaging, the 42% obstruction by diameter does slightly reduce contrast on high-magnification planetary targets compared to an unobstructed refractor. However, for its intended use on deep-sky objects, the trade-off for sensor illumination is a clear advantage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eImaging-Ready with a 2\" Dual-Speed Focuser\u003c\/h3\u003e\n\u003cp\u003eThe Quattro 150P arrives ready for your camera rig. It features a robust 2\" dual-speed Crayford-style focuser with an 11:1 fine-focus ratio, allowing for precise focus adjustments essential for capturing sharp stellar detail. The focuser provides smooth, shift-free operation, easily supporting the weight of a DSLR or a cooled astronomy camera and filter wheel.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eVisual Astronomy: 295x Maximum Magnification\u003c\/h3\u003e\n\u003cp\u003eWhile designed as an astrograph, the Quattro 150P is also a capable visual instrument. With the included 22mm eyepiece, you get a wide 70° field perfect for sweeping the Milky Way. Its 150mm aperture resolves details down to a Dawes' limit of 0.77 arcseconds and can theoretically push to a maximum of 295x magnification under excellent seeing conditions, revealing details on the Moon and planets.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the included coma corrector necessary for the Sky-Watcher Quattro 150P?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. For astrophotography with any fast Newtonian reflector like the f\/3.9 Quattro 150P, a coma corrector is essential. Coma is an optical aberration that makes stars at the edge of the field of view appear comet-shaped. The included corrector corrects for this, ensuring stars are sharp and round across your entire image sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the Quattro 150P perform on the Andromeda Galaxy (M31)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Sky-Watcher Quattro 150P's 600mm focal length is exceptionally well-suited for large targets like the Andromeda Galaxy (M31). Paired with a camera using an APS-C or full-frame sensor, you can easily frame the entire galaxy, including its faint outer arms and satellite galaxies M32 and M110, in a single shot.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Sky-Watcher Quattro 150P for planetary imaging of Jupiter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile its primary strength is deep-sky imaging, you can use the Quattro 150P for planetary work. To achieve the necessary image scale for planets like Jupiter and Saturn, you will need to use a 2x or 3x Barlow lens to increase the effective focal length. The 150mm aperture is capable of resolving cloud bands on Jupiter and the Cassini Division in Saturn's rings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of mount is required for the Quattro 150P?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe optical tube weighs 12.6 pounds. For astrophotography, you will want a stable German equatorial mount with a payload capacity of at least 20-25 pounds to comfortably handle the telescope, camera, and any guiding equipment. Mounts in the Sky-Watcher EQM-35, HEQ5, or EQ6-R Pro class are excellent choices.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the difference between the Quattro 150P and a standard 6\" f\/5 Newtonian?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe main difference is speed. The Quattro 150P's f\/3.9 focal ratio is significantly faster than a typical f\/5 Newtonian, allowing for much shorter exposure times. The Quattro also includes an oversized secondary mirror for better camera sensor illumination and comes bundled with a coma corrector, an accessory you would need to purchase separately for a standard Newtonian.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the 42% central obstruction of the Quattro 150P affect visual observing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 42% central obstruction (by diameter) is larger than what is typically found on a visual Newtonian. This is an intentional design choice to provide even illumination to large camera sensors. For visual use, this will cause a slight reduction in peak contrast on very high-magnification targets like planets, but it is generally not noticeable when observing faint, wide-field deep-sky objects.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eNewtonian\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Aperture\u003c\/td\u003e\n\u003ctd\u003e150mm (6\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e600mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/3.9\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMirror Coatings\u003c\/td\u003e\n\u003ctd\u003eProtected Aluminum with 94% reflectivity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGlass Type\u003c\/td\u003e\n\u003ctd\u003eBorosilicate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSecondary Mirror Diameter\u003c\/td\u003e\n\u003ctd\u003e64mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSecondary Obstruction (by diameter)\u003c\/td\u003e\n\u003ctd\u003e42%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSecondary Obstruction (by area)\u003c\/td\u003e\n\u003ctd\u003e18%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser\u003c\/td\u003e\n\u003ctd\u003e2\" Dual-Speed Crayford\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLight Gathering Power\u003c\/td\u003e\n\u003ctd\u003e40% more than a 5\" telescope\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDawes Limit\u003c\/td\u003e\n\u003ctd\u003e0.77 arcseconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRayleigh Limit\u003c\/td\u003e\n\u003ctd\u003e0.93 arcseconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLimiting Magnitude\u003c\/td\u003e\n\u003ctd\u003e13.36\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Magnification\u003c\/td\u003e\n\u003ctd\u003e295x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum Magnification\u003c\/td\u003e\n\u003ctd\u003e21x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Length\u003c\/td\u003e\n\u003ctd\u003e22\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Outer Diameter\u003c\/td\u003e\n\u003ctd\u003e7.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Weight (with accessories)\u003c\/td\u003e\n\u003ctd\u003e12.6 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUPC\u003c\/td\u003e\n\u003ctd\u003e050234112055\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eQuattro 150P Newtonian OTA\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eComa Corrector\/Reducer\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e22mm 70° Ultra Wide Eyepiece (1.25\")\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e6x30 Finderscope\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eTube Rings with V-Style Dovetail Plate\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e2\" to 1.25\" Eyepiece Adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Sky-Watcher_Quattro_200P_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Sky-Watcher Quattro 150P Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.skywatcherusa.com\/pages\/firmware-and-software\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e \n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.skywatcherusa.com\/pages\/apps\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 512 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M57.7 29.1C42.4 13.7 21.7 5.1 0 5.1V31.5c11.2 0 21.8 4.4 29.7 12.3L42.5 56.5c-3.1-3.1-6.4-5.9-9.9-8.2c-11.2-7.2-24.3-11.3-38-11.3v26.4c7.3 0 14.3 2.1 20.3 5.9l-12.4 12.4c-3.1-1.3-6.4-2.3-9.9-2.3C.8 79.3 0 91.5 0 104.5v26.4c15.2 0 29.4-6.2 39.6-16.4l14.4 14.4c-4.4 5.9-10.1 10.6-16.4 13.7V169c11.2 0 21.8-4.4 29.7-12.3l12.8 12.8c-3.1 3.1-6.4 5.9-9.9 8.2c-11.2 7.2-24.3 11.3-38 11.3v26.4c21.7 0 42.4-8.6 57.7-23.9L352 1.3l-294.3 27.8zM384 32c-17.7 0-32 14.3-32 32s14.3 32 32 32s32-14.3 32-32s-14.3-32-32-32zm-64 128c-17.7 0-32 14.3-32 32s14.3 32 32 32s32-14.3 32-32s-14.3-32-32-32zm128 128c-17.7 0-32 14.3-32 32s14.3 32 32 32s32-14.3 32-32s-14.3-32-32-32zm-64 128c-17.7 0-32 14.3-32 32s14.3 32 32 32s32-14.3 32-32s-14.3-32-32-32z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eSynScan Pro App\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/sky-watcher-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eSky-Watcher 2-Year Limited Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sky-Watcher","offers":[{"title":"Default Title","offer_id":44968036925725,"sku":"SW-S11205","price":920.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Sky-Watcher-Quattro-150P-6inch-S11205-1__48059.1661114770.1280.1280.jpg?v=1684348220"}],"url":"https:\/\/davidastro.com\/collections\/sky-watcher-quattro-imaging-newtonians.oembed","provider":"David Astro","version":"1.0","type":"link"}