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Mmoag
I've also just integrated a MMOAG into my setup. Its rigidity and security of connection between the camera and scope is excellent. Getting the guide camera to focus is tricky. I also have short back focus behind my 12.5" f6.7 RC. An STL6303e now rides at the rear. I use an ST402 for guiding. I couldn't use the MMOAG helical focuser, which does have some slop and is too deep. I also had to use the long STL-MMOAG apapter to reach focus with the STL and ST 402. My guider stars are round.
I have also elected to lower the prism position a bit more - the 6303 chip is quite a bit smaller than the 11k so there is space. This has been done because of my plans for squeezing in an image rotator.
OAGs have always had compromises - I've been using them on and off since the the early 90's often without success but more frustration. The MMOAG is so far the best I have used by far - even though there are challenges.
guy
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