I use both a Straight Through and a Right Angled finder on my OTA. RA Finders tend to have a short body so it can be difficult to sight along the body.
So, I use the Straight Through to sight along and acquire the field, then move my head/eyes over to the RA finder on the other side on the OTA, to centre the image in the RA Finder. That way, I get the best of both worlds!
Cheers
Dennis
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