Quote:
Originally Posted by trickybilly
I've tried collimation and have 2 questions.
http://i.imgur.com/TerhJqQ.jpg
1) I collimate with the cheshire being as close to the focus as it can get (turning the focus so that the cheshire gets as near to the telescope as possible). The closer I get a black square (marked by red arrow) is getting bigger. On images representing good collimation there is no such square.
2) How to look into the cheshire "the right way"? I try to look into it without much angle, but when I move my head a little the "crosshairs" move quite significantly (green lines illustrate this)
Note that this image is not from my telescope, but I edited a picture from Astrobaby's guide to represent my view. |
I don't have your problem because my Cheshire doesn't have the cross hairs. With mine I just get the dark spot into he annulus in the middle of my telescope. I have a separate cross hair gadget which I used once to make sure the secondary was in line with the primary.
Quite frankly, I don't think I've ever adjusted the focuser when using the Cheshire - because it doesn't make any difference.
Regards,
Renato
Regards