Oversize focusers are a good thing to have also, so you can add extensions without vignetting. Did run into a problem with coma correctors, once.
Good point, plus, it's an interesting activity in itself.
On Sun, Aug 11, 2013 at 10:05 AM, Erik Hansen <erikhansen@thebluezone.net>wrote:
To me the biggest advantage to building your own tube assembly is that you can match the prime focus point to the eyepieces or other equipment you plan on using.
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