{"title":"Lunettes achromatiques SVBONY SV48P","description":"\u003cp\u003eLes lunettes SVBONY SV48P sont des doublets achromatiques vendus en tube optique seul, à compléter avec votre monture, votre renvoi coudé et vos oculaires. La 102mm f\/6.5 a une focale de 663mm et la 90mm f\/5.5 une focale de 495mm, assez courtes pour des vues larges des amas d'étoiles et de la Voie lactée.\u003c\/p\u003e\u003cp\u003eComme toutes les achromatiques ouvertes, elles montrent un peu de chromatisme sur les objets brillants à fort grossissement  : elles s'utilisent surtout à grossissement faible ou moyen et en observation terrestre.\u003c\/p\u003e","products":[{"product_id":"svbony-sv48p-90mm-f-5-5-achromatic-refractor-telescope-ota","title":"SVBONY SV48P 90mm f\/5.5 Achromatic Refractor Telescope OTA","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e90mm Aperture\u003c\/li\u003e\n\u003cli\u003e500mm Focal Length (f\/5.5)\u003c\/li\u003e\n\u003cli\u003eAchromatic Doublet Lens\u003c\/li\u003e\n\u003cli\u003e2-inch Dual-Speed Rack-and-Pinion Focuser\u003c\/li\u003e\n\u003cli\u003eFully Multi-Coated (FMC) Optics\u003c\/li\u003e\n\u003cli\u003eNet Weight: 2730g (96.3oz)\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\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\u003eSVBONY SV48P 90mm f\/5.5 Achromatic Refractor Telescope OTA\u003c\/h2\u003e\n\u003cp\u003eThe SVBONY SV48P combines a 90mm aperture with a fast f\/5.5 focal ratio, creating a 500mm focal length optical tube assembly built for wide-field astrophotography. Its air-spaced achromatic doublet lens uses ZF4\/K9 glass to gather significant light, while the 2-inch dual-speed Rack-and-Pinion focuser provides the fine control needed for critical camera focus. Weighing just 2730g, this OTA is a practical match for many portable equatorial mounts.\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\u003e90mm f\/5.5 Optics: A Wide-Field Imaging Platform\u003c\/h3\u003e\n\u003cp\u003eThe SV48P's optical design is centered on capturing large swaths of the night sky. The 90mm objective lens gathers more light than smaller 80mm refractors, and the short 500mm focal length (f\/5.5) creates a bright, expansive field of view. This combination is ideal for framing large deep-sky objects like the Andromeda Galaxy (M31) or the North American Nebula (NGC 7000) on a camera sensor.\u003c\/p\u003e\n\u003cp\u003eAs an achromatic refractor, the SV48P offers excellent contrast and sharpness for its price, making it an accessible entry point into imaging. However, its doublet design means some chromatic aberration (a purple fringe on bright stars) is expected, a typical trade-off for the affordability and fast focal ratio compared to more expensive apochromatic (APO) 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\u003eThe 2-inch Dual-Speed Focuser: Precision for Astrophotography\u003c\/h3\u003e\n\u003cp\u003eAchieving sharp focus is non-negotiable in astrophotography, and the SV48P is equipped with a robust 2-inch rack-and-pinion (RAP) focuser to meet this demand. The dual-speed mechanism features a 1:10 reduction ratio, allowing you to make extremely fine adjustments with the smaller knob, ensuring stars are tight and focused. This level of control is crucial when imaging with DSLRs or dedicated astronomy cameras.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-inch Barrel:\u003c\/strong\u003e Accommodates wide-field 2-inch eyepieces, diagonals, and camera adapters for maximum flexibility and illumination of larger sensors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.25-inch Adapter:\u003c\/strong\u003e A step-down adapter is included, providing compatibility with the vast majority of standard eyepieces and accessories.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRack-and-Pinion Design:\u003c\/strong\u003e Offers a higher load capacity than basic Crayford focusers, reducing slippage when using heavier imaging trains.\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\u003eA 2730g OTA: Designed for Portable Mounts\u003c\/h3\u003e\n\u003cp\u003eAt a net body weight of 2730g (96.3 oz), the SV48P optical tube assembly is light enough to be carried effectively by a wide range of entry-level and portable equatorial mounts. This makes it an excellent choice for a \"grab-and-go\" imaging rig or for traveling to dark sky sites. The 108mm tube outer diameter is standard, allowing for easy mounting with common tube ring sizes.\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\u003eSVBONY SV48P vs. an 80mm ED Refractor: Aperture vs. Color Correction\u003c\/h3\u003e\n\u003cp\u003eWhen considering the SV48P, a common comparison is against an 80mm ED doublet refractor. The choice between them depends on your primary goal and budget.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe ED Refractor's Advantage:\u003c\/strong\u003e An 80mm ED scope will use extra-low dispersion glass to virtually eliminate the chromatic aberration (purple fringing) seen in the SV48P. This results in higher-fidelity color on bright stars and is a significant optical advantage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe SV48P's Advantage:\u003c\/strong\u003e The SV48P offers a larger 90mm aperture, which translates to roughly 26% more light-gathering power than an 80mm scope. This allows for slightly shorter exposures on faint nebulae. Most significantly, the SV48P achieves this larger aperture at a much more accessible price point, making it a compelling option for those starting in wide-field 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 is the SVBONY SV48P 90mm OTA best suited for?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe SVBONY SV48P is primarily designed for wide-field astrophotography of large deep-sky objects like nebulae and galaxies, thanks to its fast \u003cstrong\u003ef\/5.5 focal ratio\u003c\/strong\u003e and \u003cstrong\u003e500mm focal length\u003c\/strong\u003e. It also serves as a great rich-field visual telescope for sweeping the Milky Way with a low-power 2-inch eyepiece.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the SV48P 90mm perform on bright targets like Jupiter or the Moon?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor visual use, the SV48P will show details like Jupiter's main cloud belts and the Moon's craters. However, as an achromatic refractor, you will notice some chromatic aberration (a purple or blue halo) around the edges of these bright objects. This is a normal characteristic of this optical design and is most prominent at high magnification.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the SVBONY SV48P for imaging with a portable star tracker?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. With a net weight of only \u003cstrong\u003e2730g\u003c\/strong\u003e, the SV48P OTA is light enough for many higher-capacity star trackers and small equatorial mounts. Its \u003cstrong\u003e500mm focal length\u003c\/strong\u003e is also forgiving enough for these mounts to produce sharp images of targets like the Andromeda Galaxy (M31) or the Orion Nebula (M42).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill I see purple fringing (chromatic aberration) with the SV48P?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, some purple fringing on the brightest stars is expected. The SVBONY SV48P is an \u003cstrong\u003eachromatic doublet refractor\u003c\/strong\u003e, which corrects for two wavelengths of light but allows some minor false color. This can be significantly reduced with post-processing techniques or by using a minus-violet or light pollution filter during imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat accessories do I need to start using the SV48P OTA?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe SV48P is sold as an Optical Tube Assembly (OTA) only. To use it, you will need to provide your own:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEquatorial or Alt-Az mount\u003c\/li\u003e\n\u003cli\u003eTube rings and dovetail bar\u003c\/li\u003e\n\u003cli\u003eStar diagonal (1.25\" or 2\")\u003c\/li\u003e\n\u003cli\u003eEyepieces (1.25\" or 2\") or a camera\u003c\/li\u003e\n\u003cli\u003eFinder scope or red dot finder\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the dual-speed focuser on the SV48P help with imaging?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe dual-speed focuser has two knobs. The larger knob makes coarse adjustments to find general focus quickly. The smaller knob moves the focuser at a \u003cstrong\u003e1:10 ratio\u003c\/strong\u003e, meaning one turn of the fine knob equals 1\/10th of a turn of the coarse knob. This allows for extremely precise adjustments, which are essential for getting perfectly sharp stars in your astrophotos.\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\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eSVBONY\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e90mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e500mm\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\u003eDoublet air spaced achromatic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLens Glass\u003c\/td\u003e\n\u003ctd\u003eZF4\/K9\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Coatings\u003c\/td\u003e\n\u003ctd\u003eFully Multi-Coated (FMC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser\u003c\/td\u003e\n\u003ctd\u003e2-inch Rack-and-Pinion (RAP) Double-speed Focuser\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEyepiece Barrel Diameter\u003c\/td\u003e\n\u003ctd\u003e2-inch (with 1.25-inch adapter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Outer Diameter\u003c\/td\u003e\n\u003ctd\u003e108mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Body Weight\u003c\/td\u003e\n\u003ctd\u003e2730g \/ 96.3oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePacking Dimensions\u003c\/td\u003e\n\u003ctd\u003e490 x 215 x 230mm\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\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/SVBONY_SV48P_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\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eSVBONY SV48P 90mm f\/5.5 Refractor 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\"\u003e1.25-inch 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\"\u003eLens Cover\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 Plug\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\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/svbony-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eSVBONY 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SVBONY","offers":[{"title":"Default Title","offer_id":52861224485149,"sku":"SV-F9341A","price":293.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/SVBONY-SV48P-90mm-f-5-5-Achromatic-Refractor-Telescope-OTA-for-Imaging-1_545789b5-46f7-46f3-9746-8bd86f76b3c8.jpg?v=1788884029"},{"product_id":"svbony-sv48p-102mm-f-6-5-achromatic-refractor-telescope-ota","title":"SVBONY SV48P 102mm f\/6.5 Achromatic Refractor Telescope OTA","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e102mm Aperture\u003c\/li\u003e\n\u003cli\u003e663mm Focal Length (f\/6.5)\u003c\/li\u003e\n\u003cli\u003eAchromatic Doublet Lens\u003c\/li\u003e\n\u003cli\u003e2.5-inch Dual-Speed RAP Focuser\u003c\/li\u003e\n\u003cli\u003e210mm Vixen-Style Dovetail\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\u003eSvbony SV48P 102mm F6.5 Achromatic Refractor Telescope\u003c\/h2\u003e\n\u003cp\u003eThe Svbony SV48P refractor combines a 102mm air-spaced doublet objective with a versatile f\/6.5 focal ratio, making it an excellent instrument for wide-field views of deep-sky objects. With a focal length of 663mm, this telescope delivers bright images of nebulae and galaxies, while its heavy-duty 2.5-inch dual-speed Rack and Pinion (RAP) focuser provides the stability and precision required for both visual astronomy and imaging.\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 102mm f\/6.5 Achromatic Objective\u003c\/h3\u003e\n\u003cp\u003eThe heart of the SV48P is its 102mm objective lens, which gathers significantly more light than smaller beginner refractors, resolving finer detail in star clusters and brighter nebulae. The f\/6.5 focal ratio strikes a balance between the fast, wide fields of a rich-field telescope and the higher magnification potential of a longer instrument, making it well-suited for observing large targets like the Andromeda Galaxy (M31) or the Orion Nebula (M42).\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFully Multi-Coated (FMC):\u003c\/strong\u003e All air-to-glass surfaces are coated to maximize light transmission and contrast, producing brighter and more color-accurate images.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAchromatic Design:\u003c\/strong\u003e As a doublet achromat, the SV48P offers sharp, high-contrast views. Observers should note that some minor chromatic aberration, or false color, will be visible on extremely bright targets like Jupiter or Sirius, which is characteristic of this optical design.\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\u003e2.5-inch Dual-Speed RAP Focuser\u003c\/h3\u003e\n\u003cp\u003eUnlike standard entry-level focusers, the SV48P is equipped with a 2.5-inch dual-speed Rack and Pinion unit. This larger, more robust design prevents flexure and wobble when using heavy 2-inch eyepieces or a DSLR camera. The dual-speed control allows for rapid coarse adjustments to find initial focus, while the fine-focus knob enables critical, tack-sharp adjustments for high-magnification viewing or imaging.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecise Adjustments:\u003c\/strong\u003e Millimeter markings on the drawtube allow you to easily return to a known focus point for different eyepieces or camera setups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecure Connection:\u003c\/strong\u003e The focuser accepts 2-inch accessories directly and includes a 1.25-inch adapter, both using compression rings to securely hold your gear without marring the barrels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Stability:\u003c\/strong\u003e The optical tube is held by a set of solid rings attached to a 210mm Vixen-style dovetail plate, ensuring a secure connection to a wide range of equatorial and alt-azimuth mounts.\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 are the best objects to observe with the Svbony SV48P 102mm telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe SV48P's \u003cstrong\u003e102mm aperture\u003c\/strong\u003e and \u003cstrong\u003ef\/6.5 focal ratio\u003c\/strong\u003e make it ideal for wide-field deep-sky objects. It excels at framing large open star clusters like the Pleiades (M45), diffuse nebulae like the North American Nebula (NGC 7000), and large galaxies like the Andromeda Galaxy (M31).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill I see color fringing with the Svbony SV48P?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, as a doublet \u003cstrong\u003eachromatic refractor\u003c\/strong\u003e, the SV48P will exhibit some chromatic aberration (false color, typically a purple fringe) on very bright objects. This will be most noticeable on the limb of the Moon, planets like Jupiter and Venus, and bright stars. This is an expected trade-off for the affordability and simplicity of this optical design.\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 SV48P 102mm refractor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe telescope has a net weight of \u003cstrong\u003e3400g (7.5 lbs)\u003c\/strong\u003e. You will need a sturdy astronomical mount with a Vixen-style saddle that is rated to carry at least 10-12 lbs to ensure stability. An equatorial mount like a Celestron AVX or Sky-Watcher EQM-35 would be a good match for both visual use and entry-level astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the benefit of the 2.5-inch dual-speed focuser on the SV48P?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e2.5-inch dual-speed RAP focuser\u003c\/strong\u003e offers two main advantages. The large diameter provides a rigid, stable platform for heavy accessories like 2-inch eyepieces or cameras, preventing image shift. The dual-speed control allows you to make large focus changes quickly with the coarse knob and then use the 10:1 fine-focus knob to achieve critical sharpness, which is essential for astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the Orion Nebula (M42) look through the Svbony SV48P in a suburban sky?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFrom a typical suburban location, the SV48P's \u003cstrong\u003e102mm objective\u003c\/strong\u003e will easily reveal the bright core of the Orion Nebula, including the four prominent stars of the Trapezium. With a low-power 2-inch eyepiece, you can frame the entire \"sword\" region. The f\/6.5 optics will provide a bright enough image to show the extended nebulosity and wispy \"wings\" of M42, especially when using a UHC or light pollution filter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Svbony SV48P for astrophotography?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the SV48P is a capable telescope for starting in astrophotography, particularly for wider-field images of star clusters and large nebulae. Its robust \u003cstrong\u003e2.5-inch focuser\u003c\/strong\u003e can handle the weight of a DSLR or a dedicated astronomy camera. For best results, pairing it with a field flattener is recommended to correct for field curvature at the edges of the image.\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\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eSVBONY\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eRefractor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e102mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e663mm\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\u003eDoublet air spaced achromatic design\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Coatings\u003c\/td\u003e\n\u003ctd\u003eFully Multi-Coated (FMC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser\u003c\/td\u003e\n\u003ctd\u003e2.5-inch RAP Double Speed Focuser\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEyepiece Barrel Diameter\u003c\/td\u003e\n\u003ctd\u003e2-inch (with 1.25-inch adapter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDrawtube Markings\u003c\/td\u003e\n\u003ctd\u003eYes, millimeter markings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser Rotation\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMount Type\u003c\/td\u003e\n\u003ctd\u003eVixen-style Dovetail Plate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDovetail Plate Length\u003c\/td\u003e\n\u003ctd\u003e210mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinder Scope Bracket\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded Dust Plug\u003c\/td\u003e\n\u003ctd\u003eOne 1.25\" dust plug\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e3400g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e720 x 270 x 230mm\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\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/SVBONY_SV48P_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\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\/SVBONY_SV48P_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\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/svbony-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eSVBONY Warranty Policy\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SVBONY","offers":[{"title":"Default Title","offer_id":52861224583453,"sku":"SV-F9341C","price":322.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/SVBONY-SV48P-102mm-F6-5-Achromatic-Refractor-Telescope-with-2-5-RAP-1_6e073473-1ec6-42a7-88a7-7e27bc0269f9.jpg?v=1788884012"}],"url":"https:\/\/davidastro.com\/fr\/collections\/svbony-sv48p-achromatic-refractors.oembed","provider":"David Astro","version":"1.0","type":"link"}