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you can creat your own sight tube with a simple roll of paper or card. I have dont this and ti works perfectly to see if the secondary is aligned properly under the focuser
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And just when I was about to call bintel for the Orion. I might try this trick first.
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if you plan on getting another scope, moving from 200mm to 70mm is quite a backward step. if its only for doubles you will see less stars and the dimmer doubles may be beyond the scope...
if you save your money, aoe have a 102mm f/9 on an eq5 ofr about $750 (+postage). i am considering this scope myself just for a grab and go scope
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Just had a look at aoe. $750 is too much for me but I agree with the bargain. Now I'm considering the 90mm for $300 from aoe. Bargain, but will it do the job. I'm thinking yes. All I need is performance on bright stars because my Newtonian does a very satisfying job on everything else including faint doubles. I guess when you have a really bright star with a faint close double I might still have a problem.