Quote:
Originally Posted by Somnium
if your polar alignment is out you will get a lot of field rotation when pointing close to the celestial pole, when you are pointing to the east or west the drift will be present if the altitude is out of alignment and when you are imaging near the meridian drift will happen if the azimuth is out.
the L shapes should happen across the field, maybe it didnt show up very well on stars that were not so bright ?
if you dial in your polar alignment it should sort these issues out.
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Perfect, thanks Aidan! That'll do it. I think my Az was close, but the Alt alignment must have been out by a fair bit. Not bad considering I'd spent all night trying to get alignmaster to work (EPIC FAIL) and ended up doing a simple one-star alignment instead.
Obviously when I was lower in the eastern sky the drift was much greater. Thanks the TIPS as well RE: drift alignment. After reading your comment I finally understand how drift alignment works! (silly I know
) Hopefully I can try for a proper drift alignment procedure on the weekend.
PS. You're right, the L shapes were on the dimmer stars, I just had to ramp up the light curve to see them