Brand and Model: | GSO Superview 20mm |
Price ($USD): | 50 |
Type: | Misc Wide Angle |
Focal Length: | 20 mm |
Barrel Size: | 1.25 |
Apparent FOV: | 70.0 degrees |
Field Stop Dia.: | 0.0 mm |
Eye Relief: | 18 mm |
Elements: | 5 |
Weight (lbs): | |
Description: | Bought this as a test of the GSO line. Overall impression is nice build & finish, but view in eyepiece is poor to fair. In my 8" f4.7 Newtonian only the centre 1/4 of field diameter was sharp. The next 2/4 of field came to focus at a different point than the centre area. The outer 1/4 was always fuzzy. I have a 25mm Antares 70 which I was looking to improve upon with the GSO Superview. But the Antares was better ( had 1/2 of field sharp ). |