SVBONY SV503 Telescope ED 102mm F7 Doublet Refractor (F9359D)

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SVBONY SV503 Telescope ED 102mm F7 Doublet Refractor Rugged housing prevents damage; Sliding graceful and soft dual-speed focuser; Ed glass (FPL51) can produce very beautiful and c lear images; The fully multilayer coated lens eliminates all reflections on the glass, and it has little or no chromatic aberration at high magnification. The appearance of the telescope is baked with high-end fine-grained paint, with exquisite appearance and delicate feel The objective lens features an S-FPL51 extra-low dispersion glass ED element, which eliminates chromatic aberration. This results in the best color correction for an ED doublet lens The lens adopts optical processing and low polishing technology, which is carefully carved The deceleration ratio of the two-speed 2'' toothed focusing seat is 1:10, which makes it easy to achieve accurate focus Technical Specifications Product Name SVBONY SV503 102F7 ED Astronomy Telescope Type Refractor ED Glass S-FPL51 Coating SMC Aperture 102mm / 4.01-Inch Focal length 714mm Focal Ratio f/7 Type of Focuser RAP (Rack and Pinion) Gear Reduction 1:10 Fine movement Resolving capacity 1.17" Limit value 12.1 Light gathering capacity 212x Max. Useful magnification 204x Tube weight（with rings） 5.5kg Tube outer diameter 121mm Tube material Aluminum Back Focus Length 101.9mm OTA Length 630mm Dovetail & Ring Yes Dovetail Length 200mm In the Box SVBONY SV503 Telescope ED 102mm F7 Doublet Refractor Manuals & Warranty Svbony 1-Year Warranty Show more