{"product_id":"svbony-sv545-45mm-f4-5-petzval-apo-astrograph-lens","title":"SVBONY SV545 45mm f\/4.5 Petzval APO Astrograph Lens","description":"\u003ch2\u003eSVBONY SV545 45mm f\/4.5 Petzval APO Astrograph Lens\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eSVBONY SV545\u003c\/strong\u003e is a premium \u003cstrong\u003e45mm f\/4.5 Petzval APO astrograph lens\u003c\/strong\u003e engineered for wide-field deep-sky imaging. With a precision \u003cstrong\u003e3-group 5-element Petzval optical design\u003c\/strong\u003e, it delivers a naturally flat field with excellent correction and edge-to-edge pinpoint stars, eliminating the need for an external field flattener.\u003c\/p\u003e\n\u003cp\u003eIts \u003cstrong\u003e44mm full-frame image circle\u003c\/strong\u003e makes it ideal for modern astronomy cameras, mirrorless systems and DSLR astrophotography, while the ultra-lightweight \u003cstrong\u003e980g OTA design\u003c\/strong\u003e makes it perfect for portable star trackers and travel imaging setups.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1050\/4506\/6060\/files\/SVBONY-SV545-203mm-F4.5-Focal-Length_5f851184-4b71-4120-9fcb-dcbce4193698.webp?v=1776243830\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cdiv style=\"padding: 12px 14px; border-left: 4px solid #2d6cdf; background: #f8fbff; margin: 14px 0;\"\u003e✔ Direct from SVBONY China\u003cbr\u003e✔ No customs fees to pay\u003cbr\u003e✔ Official SVBONY warranty\u003cbr\u003e✔ Secure UK checkout\u003cbr\u003e✔ 980g travel-ready astrograph\u003c\/div\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e45mm f\/4.5 Fast Optics:\u003c\/strong\u003e Excellent for wide-field nebulae, star fields and Milky Way mosaics.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePetzval APO Design:\u003c\/strong\u003e 3-group 5-element layout with built-in field flattening.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e44mm Full-Frame Coverage:\u003c\/strong\u003e Fully compatible with full-frame and APS-C cameras.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e980g Lightweight OTA:\u003c\/strong\u003e Ideal for travel astrophotography and tracker mounts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Helical Focuser:\u003c\/strong\u003e Smooth manual focusing for precision control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCAA Rotator:\u003c\/strong\u003e Lockable 360° framing adjustment for perfect composition.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM48 Rear Interface:\u003c\/strong\u003e Supports 2\" filters and common astronomy camera accessories.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFMC Coatings:\u003c\/strong\u003e High transmission with reduced reflections and better contrast.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1050\/4506\/6060\/files\/SVBONY-SV545-Full-Frame-Ready-44mm-Image-Circle_3fa47950-820b-4f7c-bcf6-437ffd603611.webp?v=1776243831\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch2\u003eBuilt for Portable Wide-Field Imaging\u003c\/h2\u003e\n\u003cp\u003eAt only \u003cstrong\u003e980g OTA weight\u003c\/strong\u003e, the SV545 is one of the best choices for \u003cstrong\u003eportable astrophotography rigs\u003c\/strong\u003e. It pairs beautifully with harmonic mounts, lightweight equatorial systems and star trackers, making it ideal for travelling to dark sky sites or building an airline-friendly imaging setup.\u003c\/p\u003e\n\u003cp\u003eThe fast \u003cstrong\u003e202.5mm focal length\u003c\/strong\u003e makes it perfect for large targets such as the North America Nebula, Heart and Soul, Rosette, Andromeda and Milky Way panorama mosaics.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1050\/4506\/6060\/files\/SVBONY-SV545-Built-In-Field-Flattener-Comparison_1e8f8794-11e3-4e29-8890-f146ef9ceac6.webp?v=1776243832\" 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\u003e45mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Length\u003c\/th\u003e\n\u003ctd\u003e202.5mm\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\u003eImage Circle\u003c\/th\u003e\n\u003ctd\u003e44mm Full Frame\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCoatings\u003c\/th\u003e\n\u003ctd\u003eFully Multi-Coated (FMC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocuser\u003c\/th\u003e\n\u003ctd\u003eIntegrated helical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRotator\u003c\/th\u003e\n\u003ctd\u003eLockable 360° CAA\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\u003eFilter Support\u003c\/th\u003e\n\u003ctd\u003e2\" filters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003e980g OTA only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cp\u003eThe SV545 includes the optical tube, mounting hardware, carry bag, dovetail support components and accessories supplied by SVBONY for immediate setup and imaging.\u003c\/p\u003e\n\u003cdiv style=\"padding: 12px 14px; border-left: 4px solid #ddd; background: #fafafa; margin: 14px 0;\"\u003e\n\u003cstrong\u003eNote:\u003c\/strong\u003e Electronic autofocus motor (EAF) is not included.\u003c\/div\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1050\/4506\/6060\/files\/SVBONY-SV545-Package-Contents-Accessories_eaa6d9fb-6460-445f-9907-01f6df7aacfa.webp?v=1776243831\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch2\u003eWhy Choose the SV545?\u003c\/h2\u003e\n\u003cp\u003eThe SV545 is designed for astrophotographers who want \u003cstrong\u003epremium full-frame optical performance in an ultra-light portable format\u003c\/strong\u003e. Its Petzval design keeps the imaging train simple, the 44mm image circle supports large sensors, and the low weight makes it one of the best travel astrographs in its class.\u003c\/p\u003e\n\u003cp\u003eFor users building compact rigs around \u003cstrong\u003eportable trackers, mirrorless cameras, cooled CMOS cameras and remote dark-sky travel systems\u003c\/strong\u003e, the SV545 is an outstanding choice.\u003c\/p\u003e","brand":"Svbony","offers":[{"title":"Default Title","offer_id":57291352801612,"sku":"w9317b","price":399.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/4506\/6060\/files\/Untitled_design_2.png?v=1776233364","url":"https:\/\/svbonyuk.com\/products\/svbony-sv545-45mm-f4-5-petzval-apo-astrograph-lens","provider":"SVBONY UK ","version":"1.0","type":"link"}