SVBONY SV209 Field Flattener for SV550 122mm Refractor Telescope(0.8X) | Corrects The Field Curvature and a Wider Field of View, Telescope Accessories($156.99Value)

Description

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 SV209 0.8x focal reducer converts the 854mm focal length f/7 refractor into a 683.2mm f/5.6 system for faster and wider field astronomical and terrestrial photography In addition to reducing the focal length of the telescope and thereby increasing the photographic speed; the flattens the normal field curvature inherent in refractors; SV209 reducer flattener provides images that are sharply focused out to the corners of DSLR and CCD imaging chips SV209 0.8x reducer has a metric 63x1 thread; the telescope reducer flattener screws into the focuser to ensure a secure connection 1.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 2.SV209 0.8x reducer 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 3.SV209 0.8x reducer flattener converts the 854mm focal length f/7 refractor into a 683.2mm f/5.6 system for faster and wider field astronomical and terrestrial photography 4.In addition to reducing the focal length of the telescope and thereby increasing the photographic speed; the flattens the normal field curvature inherent in refractors; SV209 0.8x reducer flattener provides images that are sharply focused out to the corners of DSLR and CCD imaging chips 5.SV209 0.8x reducer flattener has a metric 63x1 thread; the telescope reducer flattener screws into the focuser to ensure a secure connection