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morls
25-09-2019, 10:58 PM
After taking some pics tonight I noticed during processing there was some blurring of the image, almost like ghosting. It may well be collimation - I didn't check before taking images (in a rush...), having done a daylight collimation yesterday.
I'll make sure I do a star test before the next session, but in the meantime I'm just wondering if this ghosting is a symptom of poor seeing? It's more noticeable in the Saturn pic...
Cheers
Stephen

LostInSp_ce
26-09-2019, 03:44 AM
Stephen it looks like some bad frames with poor seeing made it into in your final stack. You might have to remove them manually if your stacking program can't.

Saturnine
26-09-2019, 10:06 AM
Certainly looks like it could be misalignment of frames during stacking, quite possibly caused by frames affected by poor seeing .

morls
26-09-2019, 10:15 AM
Thank you both. I'm not sure how to remove individual frames in autostakkert or registax but I'll check it out.