|
Matthew - isolating the flexure is certainly the problem. I too only see it in RA as I suspect that the scope rings are far enough apart to prevent the rotation on my flat platform that would be equivalent to a DEC shift. However, I think that my 150mm Mak imaging scope is a bit heavy for the rings supplied with it which could result in sag in the sideways direction which would give me RA flexure. I did reduce this by about 1/2 by changing from a piggy back to a flat platform and I have plans to stiffen the ring attachment to reduce possible side sag. The search goes on!
However, life's too short, and your success with OAG indicates that this is perhaps the way to go. Hence Matty, I would be very interested in your trials of an OAG, please post any results that you get.
Cheers Peter
|