[Author Prev][Author Next][Thread Prev][Thread Next][Author Index][Thread Index]
[ATM] collimation
John, you wrote;
Give this a try for collimation. Remove a central portion of the reflective coating on the primary, say 1/4 inch and illuminate this area FROM behind with red LED. Using auto collimation eyepiece you then perform collimation watching the multiple reflections via the autocollimation eyepiece. Very accurate, and quick and easily performed without totally wrecking night vision, as checked against conventional use of autocollimation and star test (and easier to perform).
John
Hey John & List,
John, is my graphics pic what you mean?
www.sover.net/~usc/pics/col.jpg
If so, how do you propose to accurately send the beam through the glass
perpendicular to the
surface of the curvature of the glass exactly where the beam comes
through? Or have I missed
something critical in your plan? If I have not missed anything, 1/10 of
one degree off from
beam alignment could possibly be a huge error. Correct?
Joe, monitoring some of the posts.
_______________________________________________
ATM mailing list http://www.atmlist.net/