Hello astro ethusiasts,
I'm a beginner in astrophotography and certainly a virgin when it comes down to comet photographing. I tried to photograph C/2022 E2, naturally bumped into some issues, any idea would be greatly appreciated.
Issue: I ported comet rate from cartes du ciel into PHD2, enabled comet tracking, took a couple 2 min exposure images, it feels like the image camera is focused on the comet. However, I also started to notice that for every sub I took, the position of the comet slowly drifts between shots, moving across the image camera's FOV. It feels like PHD2 positioned the imaging FOV back to its original spot after a sub, ensured all the stars aligned before each sub was taken. Ideally, I would want the position of the comet to stay fixed and let the stars to drift. Is there a setting in PHD2 that deals with this problem? I'm also not sure if this is a problem for post processing. If the comet rate has errors, I would image comet will produce star trail, but most of the subs came out clean.
Quattro 200P, F/4, 8"
Guide camera: SV305 pro
Guide scope: SV165
Attached is L filter sub with exposure of 2 min, no post processing.
Thank you for any advices,