SVBONY SV550 APO Telescope, Bundle with SV209 Field Flattener, 122mm F7 Triplet Apochromatic Refractor and 0.8X Focal Reducer, Corrects The Field Curvature and a Wider Field for Astrophotograph
The SV550 APO refractor is a compact refractor with 122mm aperture; f/7 focal ratio and 854mm focal length; a great travel telescope for astrophotography and observation; the OTA weighs 6.44kg/ 14.18lb; easy to carry out when fitting into the carrying case
The APO refractor features a 122mm aperture which gathers more light; and offers more clear and detailed images; suitable for deep sky photography and observation; and even some fainter deep sky objects; due to the higher limiting magnitude
The SV550 122mm adopts a FPL-51 triplet apochromatic lens structure which contains one piece of ED glass; the triplet lens provides better correction of aberration and greatly reduces chromatic aberration and enhance the clarity and sharpness
SV209 0.8X focal reducer field flattener is designed specifically for prime focus astrophotography with the SV550 122mm f/7 apo refractor; suitable for shooting astronomy enthusiasts
SV209 field flattener can correct the defect of field curvature of the user's shooting target; improve the imaging quality and shooting efficiency of the edge of the field of view