Celestial hemisphere:  Northern  ·  Constellation: Andromeda (And)  ·  Contains:  35 And  ·  35 nu. And  ·  Andromeda Galaxy  ·  HD3431  ·  HD3765  ·  HD3969  ·  HD4143  ·  HD4174  ·  HD4322  ·  HD4501  ·  HD4669  ·  HD4902  ·  M 110  ·  M 31  ·  M 32  ·  NGC 205  ·  NGC 206  ·  NGC 221  ·  NGC 224  ·  The star ν And
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M 31 Andromeda Galaxy NBRGB OSC, Eric Smith
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M 31 Andromeda Galaxy NBRGB OSC

Getting plate-solving status, please wait...
M 31 Andromeda Galaxy NBRGB OSC, Eric Smith
Powered byPixInsight

M 31 Andromeda Galaxy NBRGB OSC

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Description

Taken over 3 nights in September 2022 from my home in Gérgal, Spain.
15 hours of RGB and 8 hours of narrowband data using a UV/IR filter and L-eXtreme dual narrowband filter.

The knots in the spiral arms were enhanced by blending the Ha extracted from the narrowband filter using PixelMath to subtract the green and blue from the red channel. This is a new technique for me described by DarkSkyGeek in detail here: https://www.youtube.com/watch?v=19nKeFPu38s

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M 31 Andromeda Galaxy NBRGB OSC, Eric Smith