Quote:
Originally Posted by Paul Haese
From your descriptions you could have warped the secondary holder and mirror just a little. You cannot tighten these things are really tight, just snug is the go.
I used the tak scope until I had it as good as I could then I did a star test that night with the camera in place.
Your focusor might have some issues too. Which focusor are you using?
Rotator - if Optec just check to make sure the back adapter is snug all the way around. It can be just a bit out and that will also create this sort of thing.
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Thanks Paul
you might be right re the warping. I have a suspicion that its not simply a case of having the secondary misaligned. I had read somewhere that the RC design is very sensitive to the distance from primary to secondary so if I have gone too far - either in or out - I won't be able to get it right. Is this your experience?
Focuser is an Optec TCF-S 2 inch focuser. Its a heavy beast and there is precious little movement in it.
More interesting perhaps is the rotator - a Pyxis 2 inch also. I have a few adapters in the imaging train to get everything to focus. The miscollimation has become more apparent since including it in the mix. That said, once I started adjusting the collimation I have been unable to get reasonable results with or without the rotator.
Pete