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Hi Rick,
I have literally just ordered the Orion thin OAG - it should be delivered next week!
My DSLR is virtually at the focus limit so I have been a bit concerned that it would add too much extra back focus spacing, however from your post (and photo) it looks like it will be fine - fingers crossed! I'll report back once I have put it all together.
Not having used an OAG before, do you find you have any issues in finding suitable guide stars?
Cheers,
Mike.
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