8 seconds x 24 frames of long exposures Messier 31, modified 1004x camera, 15 cm newt on a GEM, autoguided. Guide scope is mounted on the counterweight side of the GEM, which is not well polar aligned. Why is it drifting in RA so uniformly - sagging or something more subtle ? Still at the end is registax processed image
Link to this comment:
All Comments (0)