Celestial hemisphere:  Northern  ·  Constellation: Andromeda (And)  ·  Contains:  Great Nebula in Andromeda  ·  M 110  ·  M 31  ·  M 32  ·  NGC 205  ·  NGC 221  ·  NGC 224
M31 Andromeda Galaxy, StarGale
M31 Andromeda Galaxy
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M31 Andromeda Galaxy

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Description

Another attempt to image M31 with more integration time. The stars are distorted, maybe a collimation problem. The stars appeared to be good when I took the first M31 shot, but I did not like the framing. I rotated the camera in the focuser but did not recheck focus. The subsequent shots were framed as I wanted but not as good of focus and/or collimation than the test shot.

I also have trouble getting the fainter edges of the galaxy to be brighter or stand out more. When I make the faint areas more visible I also introduce more noise over the entire image.

The temperature ranged from 58 to 61 degrees F while taking the light. I stacked the best 95 percent of 107 subexposures. The flats were taken at ISO 3200 which DSS warned me about.

The G11 mount was unguided with PEC turned off.

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M31 Andromeda Galaxy, StarGale