{"title":"SharpStar Optics Apochromatic Refractors","description":"\u003cp\u003eSharpStar Optics apochromatic refractors are built mainly for astrophotography, from compact triplets to multi-element astrographs. The 50EDPH and 94EDPH f\/5.5 and the larger 140PH f\/6.5 are triplets used with matched reducers. The 100QII f\/5.8 quadruplet, the 121SDQ f\/5.6 quintuplet and the Z4 100mm f\/5.5 sextuplet build field correction into the design for a flat field on large sensors.\u003c\/p\u003e\u003cp\u003eAll also give sharp, color-free views at the eyepiece.\u003c\/p\u003e","products":[{"product_id":"sharpstar-94edph-f-5-5-triplet-apo","title":"SharpStar 94EDPH f\/5.5 Triplet APO","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eAperture: 94mm\u003c\/li\u003e\n\u003cli\u003eFocal Ratio: f\/5.5\u003c\/li\u003e\n\u003cli\u003eFocal Length: 517mm\u003c\/li\u003e\n\u003cli\u003eOptical Design: Triplet APO with Two ED Elements\u003c\/li\u003e\n\u003cli\u003eWeight: 3.3KG\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\u003eSharpStar 94EDPH f\/5.5 Triplet APO\u003c\/h2\u003e\n\u003cp\u003eThe SharpStar 94EDPH f\/5.5 Triplet APO combines a 94mm aperture with a 517mm focal length in a lightweight 3.3KG optical tube assembly. Its air-spaced triplet objective, featuring two ED glass elements, achieves a theoretical resolution of 1.28 arc-seconds down to a limiting magnitude of 11.62, delivering high-contrast, color-pure images for discerning astrophotographers.\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\u003e94mm f\/5.5 Triplet APO: Dual ED Glass for Aberration-Free Images\u003c\/h3\u003e\n\u003cp\u003eAt the heart of the 94EDPH is an air-spaced triplet objective incorporating two pieces of extra-low dispersion (ED) glass. This design aggressively corrects chromatic aberration, eliminating the color fringing around bright stars that can soften images from lesser optics. The result is a sharp, high-contrast view with pinpoint stars across the field.\u003c\/p\u003e\n\u003cp\u003eThe native f\/5.5 focal ratio is fast enough for efficient deep-sky imaging, reducing required exposure times to capture faint details. This optical system is engineered to produce images where the only limit is the seeing conditions, resolving fine structures down to 1.28 arc-seconds.\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\u003eField-Ready at 3.3KG: A Compact Grab-and-Go Astrograph\u003c\/h3\u003e\n\u003cp\u003eWeighing only 3.3KG and measuring just 468mm in length, the SharpStar 94EDPH is built for portability. Its low weight and compact size allow it to be carried securely by a wide range of mid-sized equatorial mounts, reducing the need for a heavy, observatory-class setup. This makes it an ideal choice for traveling to dark-sky sites.\u003c\/p\u003e\n\u003cp\u003eThe telescope includes a robust set of mounting hardware right out of the box. A pair of CNC-machined tube rings, a Vixen-style dovetail plate, and a sturdy carrying handle ensure the optical tube is secure and easy to manage, both on and off the 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\u003e517mm Focal Length: Framing Nebulae and Galaxies at f\/5.5\u003c\/h3\u003e\n\u003cp\u003eThe 517mm focal length provides a versatile field of view that is perfectly suited for many of the most popular deep-sky targets. With a modern APS-C or Micro Four Thirds sensor, you can easily frame large objects like the Andromeda Galaxy (M31) or the entire North American Nebula (NGC 7000) in a single shot.\u003c\/p\u003e\n\u003cp\u003eFor imagers seeking an even wider and faster system, an optional dedicated reducer brings the focal ratio down to f\/4.4. This accessory transforms the 94EDPH into an exceptionally fast astrograph capable of illuminating full-frame sensors, making it possible to capture vast nebulae complexes and star fields with significantly shorter exposure times.\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\u003eSharpStar 94EDPH vs. 80mm APOs: The Impact of 94mm Aperture\u003c\/h3\u003e\n\u003cp\u003eWhile 80mm refractors are a popular starting point, the 94mm aperture of the 94EDPH offers a significant step up in light-gathering power and resolution. This directly translates to brighter images, shorter sub-exposure times, and the ability to resolve finer details in galactic dust lanes and planetary nebulae.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigher Resolution:\u003c\/strong\u003e The 94EDPH resolves down to 1.28 arc-seconds, a noticeable improvement over the ~1.45 arc-second limit of a typical 80mm refractor, revealing more intricate structures in your targets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGreater Light Grasp:\u003c\/strong\u003e The larger 94mm objective collects substantially more photons per second than an 80mm lens. This allows you to capture faint, extended objects with better signal-to-noise ratio in the same amount of imaging time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaintained Portability:\u003c\/strong\u003e Despite its larger aperture, the 94EDPH remains highly portable at just 3.3KG, occupying a similar weight class to many fully-equipped 80mm imaging setups.\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 objects is the SharpStar 94EDPH best for?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe SharpStar 94EDPH excels at imaging medium to large deep-sky objects. Its \u003cstrong\u003e517mm focal length\u003c\/strong\u003e provides an ideal field of view for targets like the Andromeda Galaxy (M31), the Orion Nebula (M42), the North American Nebula (NGC 7000), and large open star clusters like the Pleiades (M45).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need the optional reducer for the SharpStar 94EDPH?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe optional reducer is recommended if you plan to use a \u003cstrong\u003efull-frame camera\u003c\/strong\u003e or want to capture very large targets in a single frame. It also speeds up the optical system to f\/4.4, reducing exposure times. For cameras with APS-C or smaller sensors, the native \u003cstrong\u003ef\/5.5 focal ratio\u003c\/strong\u003e and 517mm focal length are excellent for a wide range of nebulae and galaxies.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat size mount do I need for the SharpStar 94EDPH?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith a bare optical tube weight of only \u003cstrong\u003e3.3KG\u003c\/strong\u003e, the 94EDPH is not demanding. For astrophotography, a mid-sized equatorial mount with a payload capacity of around 30 lbs (13.6 kg), such as a Sky-Watcher HEQ5 or iOptron CEM26, is a perfect match and will provide stable, accurate tracking.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the SharpStar 94EDPH good for visual observing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. The triplet apochromatic objective with two ED elements delivers sharp, high-contrast, and color-free views. It performs beautifully as a rich-field telescope for sweeping the Milky Way, observing open clusters, and viewing larger nebulae with appropriate filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the SharpStar 94EDPH frame the Andromeda Galaxy (M31) with an APS-C sensor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 517mm focal length is an excellent match for framing the Andromeda Galaxy on a typical APS-C sensor. You will be able to capture the bright galactic core, its extensive dust lanes, and its two main satellite galaxies, M32 and M110, all within a single, well-composed frame.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the SharpStar 94EDPH for high-resolution planetary imaging on Jupiter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile the 94EDPH is primarily a wide-field instrument, it can be used for planetary viewing and imaging. Its \u003cstrong\u003e1.28 arc-second resolution\u003c\/strong\u003e is capable of revealing details like cloud bands on Jupiter and the Cassini Division in Saturn's rings. For imaging, you will need to add a high-quality 3x or 5x Barlow lens to increase the image scale sufficiently for a planetary camera.\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\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e94mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e517mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/5.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eObjective Lens Design\u003c\/td\u003e\n\u003ctd\u003eTriplet air-spaced APO (two ED glass elements)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e1.28 arc-seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLimiting Magnitude\u003c\/td\u003e\n\u003ctd\u003e11.62\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Length\u003c\/td\u003e\n\u003ctd\u003e468mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Diameter\u003c\/td\u003e\n\u003ctd\u003e118mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Weight\u003c\/td\u003e\n\u003ctd\u003e3.3KG\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\"\u003eTube Rings\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1 Pair\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\"\u003eDovetail 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\"\u003eHandle\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:\/\/www.sharpstar-optics.com\/download_list_1\/7.html\" 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 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.sharpstar-optics.com\/download_list_1\/7.html\" 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\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eSharpStar\/Askar 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SharpStar Optics","offers":[{"title":"Default Title","offer_id":44967741128989,"sku":"SSO-94EDPH","price":2303.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/SharpStar-94EDPH-1__34426.1650566400.1280.1280.jpg?v=1684345758"},{"product_id":"sharpstar-100qii-f-5-8-quadruplet-apo","title":"SharpStar 100QII f\/5.8 Quadruplet APO","description":"\u003c!-- more --\u003e\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cspan\u003eCompare with the first generation products, it has the following features:\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e1 The optical design has changed, in addition to the original F5.8 focal ratio, F4.3 full-frame reducer lens can be used.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e2. The appearance becomes more stylish and streamlined.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e3. Change of focuser: use 3.2-inch focuser, plus a 360-degree rear CAA, and the angle adjuster.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e4. Add a nice-looking and practical handle.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003ePRODUCT DETAILS：\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eFeatures of SharpStar 100Q ED APO refractor: \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e•100MM f\/5.8 quartette doublet air-spaced optical design\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e•Includes one special ED lens\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e•Brand-new 3.2\" dual-speed rack and pinion focuser, 10:1 fine focus\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e•2\" and 1.25\" universal interfaces, M82 thread interface, M82 screw M48 photographic taper interface (sold separate)\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e•Angle adjuster for 360 degree rotation\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e•Universal (Vixen-style) dovetail bar with tube rings\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e•Push-fit drawtube Dew-shield is provided with slidelock\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e•Add finderscope mounting devotail interface\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eSHARPSTAR 100QII ED APO apochromatic refractor tube features a quartette doublet air-space design that includes one special ED lens and the full-surface multi-coated is adopted. The quartette optical design makes SHARPSTAR 100QII an excellent imaging and observing performance. The image circle of not less than 44mm makes the 100QII a good match to any full-frame camera, giving you unparalleled shooting quality. The use of special ED glass offers excellent chromatic aberration control, not only reflected in high quality imaging, but takes observation with the 100QII into a new realm. No matter its sharpness, contrast, or chromatic aberration control, it has quite excellent performance.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eSHARPSTAR 100QI ED APO provides a wonderful observing and astrophotography system thanks to the proper focal ratio. The unique quartette design incorporates special ED APO lens for excellent chromatic aberration control, sharp stars and overall sharper images.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eSHARPSTAR 100QII ED APO also offers an impressive focusing system while providing an excellent optical system. SHARPSTAR 100QII ED APO has a two-speed 3-inch rack and pinion focuser with 1:10 focusing ratio. Compared with many refractors on the market, the use of a rack and pinion focuser offers larger payload and a stronger hold, so that your focuser will not slip when using heavy-duty observation accessories or camera. Worried about being out of focus or badly framed image? The 360-degree rotator allows you to easily rotate the shooting angle and correct the framing to your own satisfaction. More importantly, its 3-inch focusing tube is more robust and more stable than most commercially available 3-inch focusing tubes. It also provides good upgrades for heavy-duty accessories such as large-caliber field flatteners.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eIn addition, the newly improved load-bearing adjustment screw on the body of the focuser lets you to adjust your focuser according to the weight of the attachment.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/7\/assets\/description_image_SharpStar_100QII_Backfocus.jpg?v=1684345733\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/7\/assets\/description_image_SharpStar_100QII_Dimensions.jpg?v=1684345735\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/7\/assets\/description_image_SharpStar_100QII_Spot.jpg?v=1684345736\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/7\/assets\/description_image_SharpStar_94EDPH_Dimensions.jpg?v=1684345729\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/7\/assets\/description_image_SharpStar_94EDPH_Spot.jpg?v=1684345731\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003cdiv data-custom-tab\u003e\n\u003cp data-custom-tab-title\u003eSpecifications\u003c\/p\u003e\n\u003cdiv\u003e\u003cp\u003eAperture: 100mm\u003cbr\u003eFocal Length: 580mm\u003cbr\u003eLimiting star magnitude: 11.8\u003cbr\u003eFocal ratio: F5.8\u003cbr\u003eResolution：1.16 arc seconds\u003cbr\u003eTube length: 508mm (dew-shield indended), 600mm (dew-shield extended)\u003cbr\u003eAccessories: A piece of tube ring, a dovetail plate, a handle\u003cbr\u003eMain tube outer diameter: 114mm\u003cbr\u003eOTA Weight: 4.3k\u003cbr\u003eTotal Weight (with rings, dovetail plate and handle): 5.2kg\u003cbr\u003eObjective type: Quadruplet air-spaced APO\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"SharpStar Optics","offers":[{"title":"Default Title","offer_id":44967741292829,"sku":"SSO-100QII","price":3339.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/SharpStar-100QII-1__41727.1609003092.1280.1280.jpg?v=1684345753"},{"product_id":"sharpstar-121sdq-f-5-6-quintuplet-apo","title":"SharpStar 121SDQ f\/5.6 Quintuplet APO","description":"\u003c!-- more --\u003e\u003cdiv\u003e\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cspan\u003eThis product is a new generation of independent design of quintuple air-spaced high quality refractor telescope which take the form of dual after triplet. One of the triplet lens is ultra-low dispersion ED glass, which fully optimizes the function of photography, the range of image can reach the 60mm influence circle of medium frame, and the image peripheral dimming control is excellent. For most amateur astronomer it will be the device of choice for astrophotography.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eConsidering the importance of photographic focal plane, this product leaves 145mm space for the connection of professional high performance imaging equipment and accessories.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eThe 4-inch large focuser is belong to domestic initiation, the abundant threaded interface makes it easy for various joints and accessories\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eThis product is a beautiful, fashion style professional design and manufacturing to bring good product experience.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/7\/assets\/description_image_SharpStar_121SDQ_Dimensions.jpg?v=1684345739\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/7\/assets\/description_image_SharpStar_121SDQ_Spots.jpg?v=1684345741\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003cdiv data-custom-tab\u003e\n\u003cp data-custom-tab-title\u003eSpecifications\u003c\/p\u003e\n\u003cdiv\u003e\u003cp\u003eAperture: 121mm\u003cbr\u003eFocal Length: 678mm\u003cbr\u003eLimiting star magnitude: 12.1\u003cbr\u003eFocal ratio: F5.6\u003cbr\u003eResolution：0.97 arc seconds\u003cbr\u003eTube length: 598mm (dew-shield indended), 698mm (dew-shield extended)\u003cbr\u003eAccessories: A piece of tube ring, a dovetail plate, a handle\u003cbr\u003eMain tube outer diameter: 130mm\u003cbr\u003eNet Weight: 7.98kg\u003cbr\u003eObjective type: Quintuplet air-spaced APO\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"SharpStar Optics","offers":[{"title":"Default Title","offer_id":44967742210333,"sku":"SSO-121SDQ","price":5319.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/SharpStar-121SDQ-1__19472.1609006233.1280.1280.jpg?v=1684345756"},{"product_id":"sharpstar-140ph-f-6-5-triplet-apo","title":"SharpStar 140PH f\/6.5 Triplet APO","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e140mm Aperture\u003c\/li\u003e\n\u003cli\u003e910mm Focal Length\u003c\/li\u003e\n\u003cli\u003ef\/6.5 Focal Ratio\u003c\/li\u003e\n\u003cli\u003eTriplet Air-Spaced APO Objective with Two ED Elements\u003c\/li\u003e\n\u003cli\u003e0.83 arc-seconds Resolution\u003c\/li\u003e\n\u003cli\u003e10.1kg Net 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\u003eSharpStar 140PH f\/6.5 Triplet APO\u003c\/h2\u003e\n\u003cp\u003eThe SharpStar 140PH delivers exceptional apochromatic imaging with a 140mm aperture and a 910mm focal length. Its f\/6.5 triplet objective incorporates two ED glass elements to achieve a theoretical resolution of 0.83 arc-seconds with virtually zero chromatic aberration. The optical tube assembly (OTA) has a net weight of 10.1kg and measures a transportable 738.6mm with its dew shield retracted, reaching down to a limiting magnitude of 11.5 for both visual and photographic pursuits.\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\u003e140mm Triplet APO Optics with Dual ED Glass\u003c\/h3\u003e\n\u003cp\u003eAt the core of the 140PH is an air-spaced triplet objective featuring two pieces of extra-low dispersion (ED) glass. This dual-ED design provides a level of color correction superior to standard doublet or single-ED triplet systems, ensuring stars are sharp, high-contrast points of light without distracting purple fringing. This allows the 140mm objective to perform at its theoretical limit, resolving details down to 0.83 arc-seconds under ideal conditions.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvanced Aberration Control:\u003c\/strong\u003e The use of two ED elements significantly suppresses chromatic aberration, delivering true-to-life star colors and enhancing contrast on subtle planetary and deep-sky details.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Contrast Views:\u003c\/strong\u003e By focusing all wavelengths of light to a single point, the image is sharper and the sky background appears darker, making faint structures in nebulae and galaxies easier to discern.\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\u003e10.1kg OTA with a 738.6mm Retracted Length\u003c\/h3\u003e\n\u003cp\u003eEngineered for stability and field use, the SharpStar 140PH features a robust mechanical build with a net weight of 10.1kg. The main tube has an outer diameter of 148mm and retracts to a length of just 738.6mm, making it manageable for transport and setup. The gross weight, including the supplied tube rings, dovetail plate, and handle, is 11.7kg, requiring a medium-class equatorial mount for stable imaging.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRetractable Dew Shield:\u003c\/strong\u003e Helps prevent moisture from forming on the objective lens during long nights and blocks stray light from entering the optical path.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Mounting Hardware:\u003c\/strong\u003e Comes ready to mount with a matched pair of tube rings, a universal Vixen\/Losmandy-style dovetail plate, and a rigid carrying handle.\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\u003eFull-Frame Astrograph at f\/6.5\u003c\/h3\u003e\n\u003cp\u003eThe 140PH is designed as a premium astrograph with its native f\/6.5 focal ratio providing an excellent balance between image scale and brightness. The 910mm focal length is ideal for framing medium-to-large deep-sky objects like the Andromeda Galaxy (M31) or the Orion Nebula (M42) on full-frame sensors. For imagers seeking a wider field or faster acquisition, an optional 0.73x reducer transforms the scope into a fast f\/4.8 system, significantly cutting down exposure times.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual and Photographic Versatility:\u003c\/strong\u003e While optimized for imaging, the superb optics also make the 140PH a powerful visual instrument, capable of reaching a limiting magnitude of 11.5.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptional Speed Reduction:\u003c\/strong\u003e The availability of a dedicated reducer adds flexibility, allowing you to adapt the telescope's focal ratio to your specific target and imaging conditions.\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 makes the SharpStar 140PH's dual ED glass objective special?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe triplet objective in the SharpStar 140PH uses \u003cstrong\u003etwo ED (Extra-low Dispersion) glass elements\u003c\/strong\u003e instead of the more common single element. This provides a higher degree of color correction, virtually eliminating chromatic aberration (false color fringing) for sharper stars, higher contrast, and more accurate color rendition in astrophotos.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the SharpStar 140PH portable for field use?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile not a lightweight \"grab-and-go\" scope, the 140PH is designed to be transportable. Its \u003cstrong\u003enet weight is 10.1kg\u003c\/strong\u003e and it has a retracted length of \u003cstrong\u003e738.6mm\u003c\/strong\u003e, allowing it to fit in most vehicles. It requires a stable equatorial mount capable of handling the 11.7kg gross weight with accessories.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the SharpStar 140PH perform on planetary targets like Jupiter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe SharpStar 140PH excels at high-resolution planetary viewing and imaging. Its \u003cstrong\u003e140mm aperture\u003c\/strong\u003e and apochromatic optics deliver high-contrast, color-pure images, allowing you to resolve fine details like the cloud bands of Jupiter and the Cassini Division in Saturn's rings, approaching its theoretical \u003cstrong\u003e0.83 arc-second resolution\u003c\/strong\u003e limit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of mount is needed for the SharpStar 140PH?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor stable astrophotography, you will need a robust equatorial mount with a payload capacity of at least 15-20kg (33-44 lbs). This ensures the mount can comfortably handle the \u003cstrong\u003e11.7kg gross weight\u003c\/strong\u003e of the telescope plus any additional cameras, guide scopes, and other accessories without compromising tracking accuracy.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan the SharpStar 140PH be used for visual astronomy?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. While designed as an astrograph, its premium optics provide stunning visual views. With a \u003cstrong\u003elimiting magnitude of 11.5\u003c\/strong\u003e, it can reveal faint deep-sky objects, and its high-contrast, color-free performance makes it an excellent instrument for observing the Moon, planets, and bright double stars.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the advantage of using the optional reducer with the SharpStar 140PH for imaging the Andromeda Galaxy (M31)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Andromeda Galaxy is a large target. At the native \u003cstrong\u003ef\/6.5\u003c\/strong\u003e focal ratio, you get a detailed view of its core. By adding the optional 0.73x reducer, you change the focal ratio to a much faster f\/4.8. This provides two benefits: it widens the field of view to better frame the entire galaxy and its spiral arms, and it reduces required exposure times by more than 40%.\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\u003eAperture Size\u003c\/td\u003e\n\u003ctd\u003e140mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e910mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/6.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eObjective Lens\u003c\/td\u003e\n\u003ctd\u003eTriplet air-spaced APO (including two ED glass)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e0.83 arc-seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLimiting Magnitude\u003c\/td\u003e\n\u003ctd\u003e11.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Tube Length (Retracted)\u003c\/td\u003e\n\u003ctd\u003e738.6mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMain Tube Outer Diameter\u003c\/td\u003e\n\u003ctd\u003e148mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e10.1kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGross Weight\u003c\/td\u003e\n\u003ctd\u003e11.7kg (Including tube ring, dovetail plate and handle)\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\"\u003eA Pair of specialized tube ring\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\"\u003eA universal dovetail\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\"\u003eA handle\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\/SharpStar_140PH_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 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.sharpstar-optics.com\/download_list_1\/7.html\" 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\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eSharpStar\/Askar 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SharpStar Optics","offers":[{"title":"Default Title","offer_id":44967742406941,"sku":"SSO-140PH","price":6159.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/SharpStar-140PH-1__93181.1609007115.1280.1280.jpg?v=1684345761"},{"product_id":"sharpstar-z4-100mm-f-5-5-sextuplet-apo-astrograph","title":"Sharpstar Z4 100mm f\/5.5 Sextuplet Apo Astrograph","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e100mm Aperture\u003c\/li\u003e\n\u003cli\u003ef\/5.5 Focal Ratio \/ 550mm Focal Length\u003c\/li\u003e\n\u003cli\u003eSextuplet Air-Spaced APO Optical Design\u003c\/li\u003e\n\u003cli\u003e36mm Corrected Image Circle\u003c\/li\u003e\n\u003cli\u003e4.3kg Net 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\u003eSharpstar Z4 100mm f\/5.5 Sextuplet Apo Astrograph\u003c\/h2\u003e\n\u003cp\u003eThe Sharpstar Z4 100mm f\/5.5 Sextuplet Apo Astrograph integrates a fast optical system and a field flattener into a single, compact instrument. Its 100mm aperture and 550mm focal length provide a wide field of view ideal for large nebulae and star fields. The sextuplet air-spaced APO design, which includes two ED glass elements, produces a 36mm corrected image circle, while the entire optical tube assembly has a net weight of only 4.3kg and a total length of 482mm.\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\u003eSextuplet Optics: A 100mm f\/5.5 Flat-Field System\u003c\/h3\u003e\n\u003cp\u003eThe Z4's optical core is a six-element lens system, arranged in two groups of three, that is designed for color-free, high-contrast imaging. With a fast focal ratio of f\/5.5, you can capture significant signal in shorter sub-exposure times, reducing demands on your mount's tracking. The inclusion of two extra-low dispersion (ED) glass elements minimizes chromatic aberration, ensuring that stars are tight and focused without distracting color fringes.\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\u003eIntegrated Design: 36mm Image Circle with Zero Back-Focus Calculation\u003c\/h3\u003e\n\u003cp\u003eUnlike traditional refractors that require separate flatteners and precise spacing, the Sharpstar Z4 is a self-flattened astrograph. This design eliminates the guesswork of achieving a flat field; simply bring your camera to focus and the optical system delivers sharp stars across its entire 36mm image circle. This is a significant advantage for imagers who want to spend less time on setup and more time acquiring data. The 36mm circle fully illuminates APS-C sensors and is compatible with many full-frame cameras with minor, correctable vignetting.\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\u003eMechanics \u0026amp; Connectivity: 4.3kg OTA with a 4-Piece Adapter Set\u003c\/h3\u003e\n\u003cp\u003eWeighing only 4.3kg, the Z4 is compatible with a wide range of mid-capacity equatorial mounts, making it an excellent choice for portable setups. The instrument includes a robust focuser with a 360° rotator, allowing you to frame your target perfectly without rotating your camera and upsetting cable management. To ensure immediate compatibility with your imaging train, Sharpstar includes a 4-piece adapter set that steps down to a standard M48×0.75 male thread, which also features an internal thread for mounting 2\" filters.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLightweight Build:\u003c\/strong\u003e The 4.3kg net weight makes balancing easy and is gentle on your mount's payload capacity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Adapters:\u003c\/strong\u003e The package provides a complete set of adapters to connect your camera right out of the box.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilter-Ready:\u003c\/strong\u003e The final M48 adapter is threaded to accept standard 2\" astronomy filters for nebula or light pollution 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 does \"self-flattened\" mean for the Sharpstar Z4 astrograph?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA self-flattened design means the field-flattening optics are integrated directly into the main telescope body. Unlike other refractors, the \u003cstrong\u003eSharpstar Z4\u003c\/strong\u003e does not require a separate field flattener accessory or complex back-focus calculations to achieve sharp stars across the field. You just need to achieve focus with your camera.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat size camera sensor is the Sharpstar Z4's 36mm image circle suitable for?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eSharpstar Z4's\u003c\/strong\u003e 36mm corrected image circle is ideal for cameras with \u003cstrong\u003eAPS-C sized sensors\u003c\/strong\u003e, which it will illuminate fully without vignetting. It can also be used with many full-frame (36mm x 24mm) sensor cameras, though some minor vignetting may be present at the extreme corners, which can typically be corrected with flat frames.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow would the Sharpstar Z4 perform on a large target like the Andromeda Galaxy (M31)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eSharpstar Z4\u003c\/strong\u003e is an excellent choice for M31. Its 550mm focal length provides a wide field of view that can frame the entire galaxy, including its satellite companions M32 and M110, when paired with a full-frame or APS-C camera. The fast f\/5.5 optics will help capture the faint outer dust lanes with reasonable exposure times.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Sharpstar Z4's 4.3kg weight suitable for a portable mount?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, at just \u003cstrong\u003e4.3kg (net weight)\u003c\/strong\u003e, the \u003cstrong\u003eSharpstar Z4\u003c\/strong\u003e is well-suited for many popular portable equatorial mounts, such as the Sky-Watcher HEQ5 or iOptron CEM26. Its light weight leaves ample capacity for a guide scope, camera, and other accessories without straining the mount.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I attach a 2-inch filter to the Sharpstar Z4 imaging train?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe included 4-piece adapter set for the \u003cstrong\u003eSharpstar Z4\u003c\/strong\u003e terminates in an M54×0.75-to-M48×0.75 adapter. This final M48 adapter has an internal female thread designed to accept standard \u003cstrong\u003e2-inch (M48×0.75) filters\u003c\/strong\u003e directly, placing the filter at the correct distance within the optical path.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the Sharpstar Z4 require a separate field flattener or reducer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The \u003cstrong\u003eSharpstar Z4\u003c\/strong\u003e is an integrated astrograph with a built-in flattener. You do not need to purchase a separate one. The optical design is fixed at a focal length of 550mm and f\/5.5; reducers are not part of its intended design.\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\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e100mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e550mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/5.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eObjective Lens\u003c\/td\u003e\n\u003ctd\u003eSextuplet fully air-spaced APO (including two ED glasses)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Circle\u003c\/td\u003e\n\u003ctd\u003e36mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Length\u003c\/td\u003e\n\u003ctd\u003e482mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e4.3kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGross Weight\u003c\/td\u003e\n\u003ctd\u003e5.6kg (without aluminum box)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear-End Thread\u003c\/td\u003e\n\u003ctd\u003eM48×0.75 male thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded Adapters\u003c\/td\u003e\n\u003ctd\u003eM86×1-M68×1, M68×1-M54×0.75, M54×0.75-M54×0.75, M54×0.75-M48×0.75 (with 2\" filter thread)\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\"\u003eSharpstar Z4 100mm 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\"\u003eTube Ring\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\"\u003eDovetail 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\"\u003eHandle\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\"\u003e4-Piece Photographic Adapter Set\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\"\u003eWarranty Card\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\"\u003eManual\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\/SharpStar_Z4_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 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.sharpstar-optics.com\/download_list_1\/7.html\" 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\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eAskar 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SharpStar Optics","offers":[{"title":"Default Title","offer_id":44968043381021,"sku":"SSO-Z4","price":3233.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/SharpStar-Z4-Sextuplet-APO-Astrograph__53862.1661627276.1280.1280.jpg?v=1684348251"},{"product_id":"sharpstar-50edph-f-5-5-triplet-apo","title":"SharpStar 50EDPH f\/5.5 Triplet APO","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e50mm Aperture Triplet APO Objective\u003c\/li\u003e\n\u003cli\u003e275mm Focal Length\u003c\/li\u003e\n\u003cli\u003ef\/5.5 Focal Ratio\u003c\/li\u003e\n\u003cli\u003eIncludes Two ED Glass Elements\u003c\/li\u003e\n\u003cli\u003e1.07kg Total Weight\u003c\/li\u003e\n\u003cli\u003e196mm Retracted Length\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\u003eSharpStar 50EDPH f\/5.5 Triplet APO\u003c\/h2\u003e\n\u003cp\u003eThe SharpStar 50EDPH f\/5.5 Triplet APO delivers exceptional color correction from a 50mm objective by using two extra-low dispersion (ED) glass elements in its air-spaced triplet design. With a native 275mm focal length, this ultra-portable refractor weighs just 1.07kg and measures a mere 196mm long, making it an ideal companion for travel, wide-field imaging, or as a high-end guide scope capable of reaching a limiting magnitude of 10.3.\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\u003eTriplet APO Optics: 50mm f\/5.5 with Two ED Elements\u003c\/h3\u003e\n\u003cp\u003eAt the heart of the 50EDPH is an air-spaced triplet objective, a design rarely seen in telescopes of this small 50mm aperture. Including two separate ED glass elements provides outstanding chromatic aberration control, ensuring stars are sharp, pinpoint sources of light without distracting purple fringing. The fast f\/5.5 focal ratio gathers light efficiently, making it well-suited for capturing faint, extended objects like the North American Nebula (NGC 7000).\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\u003eUltra-Portable Build: A 1.07kg Grab-and-Go Design\u003c\/h3\u003e\n\u003cp\u003eEngineered for portability, the 50EDPH weighs only 1.07kg and has a contracted tube length of 196mm, compact enough to fit in a small camera bag. The scope features a 70mm Vixen-style dovetail plate with slotted 1\/4-20 threaded holes, allowing it to be mounted securely on astronomical mounts or standard photographic tripods. A retractable dew shield further enhances its compact form factor while protecting the objective from moisture and stray light.\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-Ready Mechanics: 360° Rotator and 1.25\" Adapter\u003c\/h3\u003e\n\u003cp\u003eThe 50EDPH is built with the astrophotographer in mind. It includes a 360° rotator for precise camera framing and a dual-speed rack-and-pinion focuser for critical 1:10 fine adjustments. For visual observers, the rear includes a standard 1.25\" adapter for use with diagonals and eyepieces. The package also includes a 2-section 5cm M48 extension tube, enabling you to achieve focus with planetary cameras or for straight-through visual observation without a diagonal.\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 makes the SharpStar 50EDPH's optics special for its size?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eSharpStar 50EDPH\u003c\/strong\u003e uses a triplet air-spaced apochromatic (APO) objective that includes \u003cstrong\u003etwo ED glass elements\u003c\/strong\u003e. This is a highly advanced optical design for a 50mm telescope, providing superior color correction and sharper stars compared to standard doublet or single-ED refractors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I mount the SharpStar 50EDPH?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe telescope comes with a \u003cstrong\u003e70mm Vixen-style dovetail plate\u003c\/strong\u003e. This plate is compatible with most modern astronomical mounts. Additionally, it has 1\/4-20 threaded holes, allowing you to mount it directly to a standard photographic tripod for quick visual sessions or terrestrial viewing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat are the included M48 extension tubes for on the 50EDPH?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe two 5cm M48 extension tubes are included to provide the correct back focus for different setups. You can use them to reach focus when using a planetary camera or when performing straight-through visual observation with a 1.25\" eyepiece without a star diagonal in the optical path.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the SharpStar 50EDPH for visual observation of the Orion Nebula (M42)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, absolutely. The \u003cstrong\u003e275mm focal length\u003c\/strong\u003e provides a very wide field of view, perfect for framing large objects like the Orion Nebula (M42) in its entirety. Paired with a low-power 1.25\" eyepiece, you can easily fit the nebula and its surrounding star-forming regions into a single, immersive view.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the SharpStar 50EDPH suitable for imaging the Andromeda Galaxy (M31) with a DSLR?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 50EDPH is an excellent choice for imaging large targets like the Andromeda Galaxy (M31). Its 275mm focal length is a great match for framing the full extent of the galaxy on APS-C or even some full-frame sensors. The high-quality triplet optics will ensure the galaxy's core and dust lanes are captured with sharp, color-pure stars across the field.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat are the limitations of a 50mm aperture on the SharpStar 50EDPH?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile its optical quality is superb, a \u003cstrong\u003e50mm aperture\u003c\/strong\u003e primarily excels at wide-field views and portability. It has a limiting visual magnitude of 10.3, meaning it is not designed for high-magnification views of planets or resolving faint details in small, distant galaxies. Its strength lies in capturing large nebulae, star clusters, and vast sections of the Milky Way.\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\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e50mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e275mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/5.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eObjective Lens\u003c\/td\u003e\n\u003ctd\u003eTriplet Air-Spaced APO (with two ED glass elements)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLimiting Visual Magnitude\u003c\/td\u003e\n\u003ctd\u003e10.3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Length (Dew Shield Contracted)\u003c\/td\u003e\n\u003ctd\u003e196mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGross Weight\u003c\/td\u003e\n\u003ctd\u003e1.07kg (including dovetail plate)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear Interface\u003c\/td\u003e\n\u003ctd\u003e1.25\" Visual Adapter\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\"\u003e50EDPH 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-Section 5cm M48 Extension Tube\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\"\u003e70mm Vixen-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:\/\/www.sharpstar-optics.com\/download_list_1\/7.html\" 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\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eSharpStar\/Askar 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SharpStar Optics","offers":[{"title":"Default Title","offer_id":47477227258141,"sku":"SSO-SHEDPH50","price":615.0,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/SharpStar-50-EDPH.jpg?v=1705688038"}],"url":"https:\/\/davidastro.com\/collections\/sharpstar-optics-apochromatic-refractors.oembed","provider":"David Astro","version":"1.0","type":"link"}