Quote:
Originally Posted by Rigel003
Very nice image, Stuart. I can relate to the guiding issue near the pole. 2 nights ago, I found it impossible to use PHD. It wouldn't calibrate in the EW plane because the pulses it send to the mount wouldn't move the the scope sufficiently East and West. How did you align on the comet in CCDStack?
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Hi Rigel,
The trick to calibrating is to move a little away and calibrate there, then move back. TSX then adjusts the correction rate depending on the declination you're shooting at, even then it struggles. AO is the way to go here, but I haven't got the available back focus anymore.
Using CCDStack2 (which I had to upgrade last night) is to use Star Snap and simply chose one "star", the comet. The software then just shifts the image to align the comet. You have to manually move the comet so it nearly overlays, so it doesn't just pick a random star.
Cheers
Stuart