Hi Chris,
This looks very good.
Only perhaps you could do something to stabilise the whole thing - have a look at what I have done with mine (at the very bottom of the thread).
http://www.iceinspace.com.au/forum/s...ad.php?t=23756
I used cork pads at the end of those rails.
Quote:
Originally Posted by scopemankit
....... and a small negative achromat...
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What you really need here is
positive achromat - the whole finder should actually be the small scope, focussed at infinity. Then, you can have the same viewer focus setting, both for your eye and finder.