How to center a Polar scope Reticle the easy way.
Posted 25 April 2013 - 12:15 AM
I used two O-Rings:
AS568A-112 rubber o-ring on the reticle lens
AS568A-210 rubber o-ring as a spacer between the eyepice and the reticle lens
And now it looks to be perfectly center, one thing I will say is that you are likely to have to clean the reticle lens after you put the o-ring on because its a tight fit, and when pressing it on you will touch the lens.
Posted 25 April 2013 - 06:48 AM
Posted 26 April 2013 - 02:36 AM
I put a thin O ring behind the reticle (thanks Dion) to stop it falling out should the grub screws accidentally be loosened too much.
Replacing the grubs with thumb screws (another tip from Dion) is a great help, no more fiddling with little Allen keys in the dark.
adjusting polar scope;
adjusting and mods;
Posted 26 April 2013 - 11:23 AM
do you just rely on the housing/ring/reticle all being concentric?
if that were the case they wouldn't need provision for adjustment in the first place?
I am not sure, maybe the aliment is slightly off using this method, even if it looks good, but its no better than I would have done using the grub screws.
Posted 03 May 2013 - 06:01 PM
Posted 14 May 2013 - 04:01 PM
will1384, where did you get your o rings. I tried to find them at atwoods and lowes and all they had was plumbing o rings. im going to try true value tomorrow. thanks, donnie
I had got some cheap O-Ring assortments at Harbor Freight Tools, they were under $10 for almost 400 O-rings, I had also ordered some from Amazon in the past for around the same.
I got playing with my polar scope today, and decided to get it exactly centered, not just very close, and tried using some metric screws I saved from an old laptop I disassembled, took very little time to get it centered, less than 10 minutes, I also rotated the polar scope reticle to better line up with what the night sky looks like now, I left the O-Rings installed.