{"product_id":"svbony-sv555-54mm-f4-5-apo-astrograph-telescope","title":"SVBONY SV555 54mm f\/4.5 APO Astrograph Telescope","description":"\u003ch2\u003eSVBONY SV555 54mm f\/4.5 APO Astrograph Telescope\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eSVBONY SV555\u003c\/strong\u003e is a premium \u003cstrong\u003e54mm f\/4.5 APO astrograph telescope\u003c\/strong\u003e built for serious deep-sky astrophotography. Featuring an advanced \u003cstrong\u003e3-group 5-element Petzval optical design with ED glass\u003c\/strong\u003e, it delivers a naturally flat field with exceptional edge-to-edge sharpness and ultra-low chromatic aberration.\u003c\/p\u003e\n\u003cp\u003eDesigned for modern full-frame astronomy cameras and DSLR systems, the SV555 provides a generous \u003cstrong\u003e44mm image circle\u003c\/strong\u003e, making it ideal for capturing wide nebulae, star fields, galaxies and large emission regions with pinpoint stars across the frame.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1050\/4506\/6060\/files\/6386717316224383064745589_700b58e5-6629-4472-a86e-18e9f62001e0.jpg?v=1776243955\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e✔ Direct from SVBONY China\u003c\/li\u003e\n\u003cli\u003e✔ No customs fees to pay\u003c\/li\u003e\n\u003cli\u003e✔ Official SVBONY warranty\u003c\/li\u003e\n\u003cli\u003e✔ Secure UK checkout\u003c\/li\u003e\n\u003cli\u003e✔ Full-frame astrophotography ready\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePetzval APO Design:\u003c\/strong\u003e 3-group, 5-element structure with ED glass for excellent correction and flat-field performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e54mm f\/4.5 Fast Optics:\u003c\/strong\u003e Ideal for wide-field deep-sky imaging with fast exposure times.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVariable Aperture:\u003c\/strong\u003e Adjustable from \u003cstrong\u003eF22 to F4.5\u003c\/strong\u003e for astrophotography and terrestrial use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e44mm Full-Frame Coverage:\u003c\/strong\u003e Designed for full-frame cameras and large astronomy sensors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Rotation System:\u003c\/strong\u003e Lockable 360° rotator and rotating lens body for perfect framing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEAF Compatible:\u003c\/strong\u003e Supports electronic automatic focusing for precision focus control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM72 \u0026amp; M48 Threads:\u003c\/strong\u003e Easy filter integration for both front-mounted and rear-mounted filters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eArca-Swiss + Vixen Plate:\u003c\/strong\u003e Flexible mounting for astrophotography rigs and tracking systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1050\/4506\/6060\/files\/SV555_Astrograph_Telescope_Focus_Rotation_view_55041f57-94c0-4fde-b14e-1999da9121d5.webp?v=1776243954\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eOptical Design\u003c\/th\u003e\n\u003ctd\u003e3-group 5-element Petzval APO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAperture\u003c\/th\u003e\n\u003ctd\u003e54mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Ratio\u003c\/th\u003e\n\u003ctd\u003ef\/4.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eVariable Aperture\u003c\/th\u003e\n\u003ctd\u003eF22 to F4.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSensor Coverage\u003c\/th\u003e\n\u003ctd\u003e44mm Full Frame\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFront Thread\u003c\/th\u003e\n\u003ctd\u003eM72\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRear Thread\u003c\/th\u003e\n\u003ctd\u003eM48 x 0.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocus Support\u003c\/th\u003e\n\u003ctd\u003eEAF compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMounting\u003c\/th\u003e\n\u003ctd\u003eVixen + Arca-Swiss\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003eApprox. 3kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eEngineered for Deep-Sky Imaging\u003c\/h2\u003e\n\u003cp\u003eThe SV555 is purpose-built for astrophotographers wanting \u003cstrong\u003emaximum optical quality in a highly portable platform\u003c\/strong\u003e. Its flat-field Petzval structure removes the need for a separate field flattener, simplifying your imaging train while preserving sharp star shapes right to the corners of large sensors.\u003c\/p\u003e\n\u003cp\u003eWith support for \u003cstrong\u003efull-frame cameras, cooled astronomy cameras, DSLR systems and EAF focusers\u003c\/strong\u003e, it integrates beautifully into advanced astrophotography setups while remaining compact enough for travel mounts and remote dark-sky sessions.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1050\/4506\/6060\/files\/SV555_Astrograph_Telescope_Bracket_and_dovetail_Plate_view_b48dd5c8-2267-4b8f-8794-1cb68bea032d.webp?v=1776243955\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch2\u003eLatest SV555 Upgrades\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eImproved matte sandblasted finish for a premium texture\u003c\/li\u003e\n\u003cli\u003eReduced tube weight by over 90g\u003c\/li\u003e\n\u003cli\u003eSmaller, lighter lens hood design\u003c\/li\u003e\n\u003cli\u003eImproved focus travel from 2.67mm to 3.22mm\u003c\/li\u003e\n\u003cli\u003eEnhanced portability for travel astrophotography\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1050\/4506\/6060\/files\/6386717316224383064745589_700b58e5-6629-4472-a86e-18e9f62001e0.jpg?v=1776243955\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch2\u003eOptical Test Report\u003c\/h2\u003e\n\u003cp\u003eSVBONY includes advanced optical performance validation, including \u003cstrong\u003espot diagrams, MTF testing and interferogram data\u003c\/strong\u003e, demonstrating excellent correction and edge sharpness.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1050\/4506\/6060\/files\/6388368060921941573989354_e9bd3a9e-498f-4594-9c17-3faf9c89677e.webp?v=1776243955\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch2\u003eSV555 Astrophotography Portfolio\u003c\/h2\u003e\n\u003cp\u003eReal-world images captured with the SV555 demonstrate its superb wide-field performance on nebulae and star-rich deep-sky targets.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1050\/4506\/6060\/files\/6388644355734499051095741_d46af95e-1f1c-40da-8877-d6023447f397.jpg?v=1776243955\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1050\/4506\/6060\/files\/6388644576203953814402504_2ec5f952-b199-4277-9996-0a3fb06a20a9.jpg?v=1776243955\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Svbony","offers":[{"title":"Default Title","offer_id":57291059462476,"sku":"F9395A","price":449.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/4506\/6060\/files\/61BGZ9XLNdL_AC_SL1500.jpg?v=1776233140","url":"https:\/\/svbonyuk.com\/products\/svbony-sv555-54mm-f4-5-apo-astrograph-telescope","provider":"SVBONY UK ","version":"1.0","type":"link"}