Quote:
Originally Posted by Joshua Bunn
Great result Bert.
I see some elongation on the LHS of M16 thats not in the SMC. What do you put this down to?
Josh
|
Would you believe the dovetail bar is twisting under gravity. The M16 data was collected with the optic train tilted and the SMC data close to vertical. My trusty dial indicator tells me there is NO flexure. The optics tell me there is. I have to stabilize even the double dove tail with outriggers. See images in previous post. My best guess is that the camera frame is twisting the rear of the single dovetail more than the RH200 on the double dovetail.
In this Universe there is no such thing as a rigid body.
The RH200 has a 42 mm fully corrected image circle. The PL16803 camera I am using has a 52 mm diagonal sensor. The RH200 was not designed to take the load I have put on it with the ten position filter wheel being way too heavy with the PL16803. It is up to me solve the flexure problems. This is all worth it as I am getting a very fast system with a 3.5 X 3.5 degree field.
Bert