I’m looking for some troubleshooting help with my Esprit ED80. I have this strange halo artifact on mid to bright stars (see attached image). If I rotate the image train, the defect follows the scope, so I know it’s there, and it is equally present in all filters and without filters. I don’t see any obstruction or anything, but I’m nervous to remove the lens set itself to thoroughly clean it.
Can anyone give me their best guess on the source of this, and secondly, can anyone tell me if its okay to take the lens group as a whole off the scope to clean it as long as I don’t seperate the individual lenses from each other? Thank you in advance for your help!
