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M31

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About this observation
Observer
Graham Winstanley
Time of observation
17/11/2017 - 23:34
Object
M31 Andromeda galaxy
Observing location
Bassingham, Lincolnshire
Equipment
Canon 1100D
Helios 135mm lens
EQ1 with RA drive
Exposure
19 minutes of 10s
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This may not be the best M31 on here but it demonstrates what can be done with basic equipment. 

Tracking was not working very well due to a low battery in the RA motor so subs were limited to 10s but still had some trailing. The lens was bought online for 11.50 and attaches with an M42 to Canon adapter but does require care with focus as it overshoots infinity. The poor tracking resulted in the target drifting across the fov.

Processing was part DSS and Part Pixinsight. PI refused to stack the images (probably not good enough for PI) but Deep Sky Stacker managed the job. Heavy cropping was needed to remove signs of drifting round the borders. Darks were used but no flats.

The star shapes are horrible and there is some rotation but the galaxy is surprisingly good considering the problems.

I am looking forward to having another try with a new battery.

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