Quote:
Originally Posted by multiweb
Actually an OAG is likely the way you'll end up going in the end, it's cheaper and more reliable. Some things are worth learning right at the beginning then you're done with it all for the better.
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For long focal length imaging OAG is the way to go, however if you do go with a guide scope then the longer FL the better for longer FL imaging scopes.
I have a Baader Vario finder which doubles as my guidescope. It's well made has a 60 mm objective and a FL of 250 mm. The focuser is only a drawtube which is not really suitable however it can be locked into place at the rough focus and a zwo helical focuser added for fine focusing.
You can also take widefield images through it.