Andromeda

 Posted: Oct 18th, 2025
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NGC
IC
HD
Technical Info
Telescope/Lens: Bresser Pollux 150/750 EQ-3
Camera: canon 550d
Mount: EQ-3
Software: PhotoShop,DeepSkyStacker
Accessories: RA Tracking motor
Exposure:
16 x 10" ISO/Gain: 3200
12 x 8" ISO/Gain: 1600
11 x 6" ISO/Gain: 3200
Green, Bortle 4 zone:
 Vesterborg, Denmark
 Oct 16th, 2025
5 m
209
Resolution: 5110x3377 px
Scale: 3681 KB
The shooting was difficult, well 150/750 is just a giant for a small EQ-3. There were also strong problems with drift, inaccuracy of the RA axis drive, and of course the strong gusty wind which greatly interfered with normal shooting, but in general I now roughly understand the exposure limit I can achieve with the telescope.

The hardest part was aligning the polar axis as accurately as possible; almost an hour was spent just to get rid of the star trailing in the image a little bit.

Next time I will spend more time aligning the polar axis to achieve an exposure of at least half an hour.
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