The Best Astrotech Field Flattener of 2022 – Reviewed and Top Rated
After hours researching and comparing all models on the market, we find out the Best Astrotech Field Flattener of 2022. Check our ranking below.
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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
- MINIMIZES STAR DISTORTION IN ASTROPHOTOGRAPHY: When placed between your telescope and camera, the Explore Scientific field flattener counters the negative effects of field curvature, which causes stars to appear smeared as you move away from the center of the image.
- WORKS WITH FOCAL RATIOS OF F/5 TO F/7: This field flattener is designed specifically for astrophotography using refractor-type telescopes with focal ratios of f/5 to f/7 and requires 55mm (+/- 2mm) of spacing between the back of the device and the camera sensor.
- DESIGNED FOR A SECURE CONNECTION: The field flattener has a T-ring thread to easily attach a camera using a user-supplied T-ring.
- FULLY MULTI-COATED OPTICS: The optical glass is fully multi-coated to maximize light transmission and produce high-contrast astrophotographs of planets, nebulae, galaxies, star clusters and other night sky sights.
- USA SUPPORT: Based in Springdale, Arkansas, USA, you can always be assured of excellent customer service should you ever have an issue or question.
- Corrects for field curvature, allowing the Evoguide 50ED and 50DX to be used for astrophotography
- Thread on metal caps
- T-thread connection or 1.25" opening for camera mounting
- 28mm imaging circle
- 17.5mm back focus
- Field flattener for refractors; suitable for telescopes from f4 to f8
- M48 thread for complete aperture illumination at 2"; room for accessories between - 109mm of back focus
- Field curvature is a common optical defect that is not noticeable with visual observing or photography using small chips
- Conjure astronomy photos with pin-sharp stars right out to the outer edge of the image field
- Excellent multi-coating on lenses
- Field flattener for refractors; suitable for telescopes from f4 to f8
- M48 thread for complete aperture illumination at 2"; room for accessories between - 109mm of back focus
- Field curvature is a common optical defect that is not noticeable with visual observing or photography using small chips
- Conjure astronomy photos with pin-sharp stars right out to the outer edge of the image field
- Excellent multi-coating on lenses
- Suitable for telescopes from f/4 to f/8
- M48 thread for complete illumination at 2"
- 109mm backfocus for accessories between flattener and camera
Last update on 2025-03-15 / Affiliate links / Images from Amazon Product Advertising API
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