Celestial hemisphere:  Northern  ·  Constellation: Andromeda (And)  ·  Contains:  Great Nebula in Andromeda  ·  M 110  ·  M 31  ·  M 32  ·  NGC 205  ·  NGC 221  ·  NGC 224  ·  Part of the constellation Andromeda (And)  ·  The star 32And  ·  The star 39And  ·  The star μAnd  ·  The star νAnd
Andromeda Galaxy  Messier 31, William
Andromeda Galaxy  Messier 31
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Andromeda Galaxy Messier 31

Andromeda Galaxy  Messier 31, William
Andromeda Galaxy  Messier 31
Powered byPixInsight

Andromeda Galaxy Messier 31

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Description

Ps 8:3-4

this image was created by stacking 349 frames of 4 seconds each.

ISO 1600, 50mm lens

compare this to some of our other images that were either a single long exposure, or stacks of 20 to 30 second exposures.

Taking lots of very short exposures can minimise the issues of polar alignment and other tracking problems.

Note that the tracking motor is paused during each 4 second exposure.

Did not enable mirror-lockup

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Andromeda Galaxy  Messier 31, William