SVBONY SV209 Field Flattener, 1.0X Flattener Corrects The Field, FMC Coating, M63x1 Connection, for SV550 80mm F6 APO OTA Astrophotography
SVBONY SV209 Field Flattener, 1.0X Flattener Corrects The Field, FMC Coating, M63x1 Connection, for SV550 80mm F6 APO OTA Astrophotography
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$169.99
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- SV209 is a special field flattener for SV550 80F6 OTA; which can effectively improve the image quality problem of SV550 OTA fringe field curvature
- SV209 keeps the focal length and focal plane position of the primary mirror unchanged while improving the field curvature problem
- The package of SV209 is equipped with an M63 extension tube and an M48 adapter ring to ensure that the back focal length of the flat field mirror is the astronomical conventional 55mm length
- The effective field of view of the 45mm large target surface supports not only half-frame cameras; but also full-frame cameras
- Built-in 2-inch filter mounting thread; supports 2-inch filter installation; customers do not need to buy a filter adapter ring separately