Quote:
Originally Posted by multiweb
Wow! Even the camera has its own dovetail. Hard yakka to lift that onto the mount. I topped my C11/hyperstar/guider at 25kg once. Did my back putting it on the pier over my head. Silly man...  |
The frame that holds the camera has longitudinal and lateral dovetails. I can adjust the camera position laterally to get perfect alignment with the optic axis. The frame has adjustment for height to do the same thing. As the RH200 is factory set for collimation and alignment there is no need to fiddle with the camera adjustments.
I simply take a 30s exposure while jogging the mount by 30' every couple of seconds with a Bahtinov mask. The image below is the result. I can then tell which way to move by the diffraction patterns.
The top diffraction pattern tells me it is further back than the bottom diffraction patten. This means the bottom of the camera is further back than than the top so the camera needs to be adjusted down. These movements are typically fractions of a mm. I have a dial indicator for the lateral movement. For vertical a 1mm pitch bolt with a nut that holds the bottom plate of the camera holder.
If these clouds would go away I could get it all done and get some data.
Bert