Hi guys,
My name is Geir and I'm from Norway I'm new to this forum.
My observatory equipment are: Telescope meade 14 " lx200R OTA @ f:6.2. Mount EQ8 Camera eos450d without IR filter, but with LPS filter.
Guiding: Telescope: Skywatcher 400mm refractor Camera DSI II.
I use phd2 to guiding and EQmod for telescope control.
So my problem. Here one evening I took 20 exposures a 5min of NGC7331 with guiding within +/- 1 "and the stars were round and fine throughout the image, but when I check the frames I see that all the stars move significantly towards the west in the image.
How can this be possible?