Svbony SV209 Field Flattener 1x Telescope Flattener M63x1 Connection for SV550 122F7/80F6 APO Refractor Telescope Deep Sky Photography

Svbony. Applicability, SV2091x field flattener is specially developed for SV55080F6 OTA, which can effectively improve the image quality problem of SV550 OTA fringe field curvature, while keeping the focal length and focal plane position of the main mirror unchanged. Large aperture, 45mm effective clear aperture, not only supports half-frame cameras, but also full-frame cameras, improve the fringe field curvature of deep space shooting and the image is clearer, it is one of the necessary accessories for deep-sky photography. Ease of use, M48x0.75 filter thread, SV209 field flattener comes with standard 2-inch filter mounting thread, support 2-inch filter installation, customers no longer need to buy a filter drawer separately. SV209 is equipped with M63 extension tube and M48 adapter ring to ensure that the back focal length of the field flattener is the astronomical conventional 55mm length. Coaxiality, threaded structure, M63*1 threaded field flattener compared with the plug-in type