|
If you do have any collimation issues, check the eyepieces - I recently bought a pair of 21mm and 10mm Hyperions and the found the 10mm's are a little 'wonky' - one in particular. I had to collimate by rotating the eyepiece untill I found the best spot and then put a small reference mark on the eyepiece. The other was better, but still not quite 'true'. I then checked the 21mm more closely and found that with a really critical eye, they weren't spot on either. Not something I'd ever previously had a problem with but just goes to show not all eyepieces are perfectly lined up I guess. When collimating, I tend to center something obvious. like a shed or distant tree and back off from the eyepieces 6 inches or so till I can just see the object in the exit pupil - this shows up any mis-collimation pretty quick. If you can't get 'em perfect, the object can be slightly closer to each other with respect to the center of the binoviewer (Horizontal convergence IIRC) but they can't be further away from each other or mis-aligned vertically (Horizontal/Vertical divergence) - that will give you headache real quick.
|