The defocus lens/corrector of this f6.3 is a 4-piece design with full surface coating. The use of this zoom lens has a good performance in both visual and photography. if there is further any issue.
eBay
Askar 140APO f/7 980mm focal length OTA Astro Telescope 0.8x Reducer 1x Flattener Optional
Aliexpress UK
eBay
Pixco Speed Booster Focal Reducer Lens Mount Adapter Ring for M42 Screw to Micro 43 Camera G110 G100 G95 E-M1III E-M10IV E-PL7
Aliexpress UK
Celestron Omni series eyepieces allow you to dial in the right magnification for clear and sharp images of astral bodies. The 43 degree apparent field of view in this eyepiece is perfect for viewing the Moon, planets and deep-sky objects.
eBay
ADPLO 011247, M42-FX Focal Reducer Speed Booster, Suit for M42 Lens to Suit for Fujifilm X Camera
Aliexpress UK
Rubber coating on the reducer's housing.
eBay
Pixco For EOS-FX Speed Booster Focal Reducer Lens Adapter Suit For Canon For EOS EF Lens to Suit for Fujifilm X Camera
Aliexpress UK
It's precision-manufactured to exacting tolerances and incorporates fully multi-coated optics. Focal length variable between 8mm and 24mm. Field of view, 40 to 60 degrees. Focal length of 8mm to 24mm.
eBay
Focal Reducer Speed Booster Turbo adapter for canon FD FL lens to olympus panasonic Gf7 GH5 GF7 GX8 E-PL3 em1 em5 em10 camera
Aliexpress UK
All air to glass lens surfaces are fully multicoated for maximum light transmission and color correction. Fully multicoated optics, extra low dispersion lanthanum glass. The 8" EdgeHD reducer threads directly onto the rear cell of all 8" EdgeHD optical tubes, in place of the scope's visual back.
eBay
The defocus lens/corrector of this f6.3 is a 4-piece design with full surface coating. The use of this zoom lens has a good performance in both visual and photography.
eBay
The 8" EdgeHD reducer threads directly onto the rear cell of all 8" EdgeHD optical tubes, in place of the scope's visual back. All air to glass lens surfaces are fully multicoated for maximum light transmission and color correction.
eBay