I have an Orion ED80T CF and am getting a Sony A6000 mirrorless camera and want to get an OAG for autoguiding.
The max backfocus on the scope is 127mm, the flange focal distance on the camera is 18mm. Unfortunately those are all the dimensions I've been able to find.
I've found 9mm thin OAGs, 27mm OAGs but have no idea what would be the best fit. Manuals for OAGs with dimensions seem scarce.
I understand that the imaging and guide camera must be at the same light path length, but without the specifications on the OAG can't see how to determine what thatlength should be.
How does one work this out to determine which OAG would be the best fit for this scope & camera and what spacers are needed? Any other considerations?
The
Lumicon Easy-Guider looks like a substantial unit which gets some positive comments, as do several others like the
TS OAG9. What appears to be a larger prism size on the Lumicon is attractive.
Any suggestions or comments?
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