StDrSa-01, the faint and mysterious neighbor of Andromeda Galaxy (Steven Bellavia)

Celestial hemisphere: Northern · Constellation: Andromeda (And) · Contains: 35 And · Andromeda Galaxy · M 110 · M 31 · M 32 · NGC 205 · NGC 221 · NGC 224 · The star 32 And · The star ν And

StDrSa-01, the faint and mysterious neighbor of Andromeda Galaxy, Steven Bellavia

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StDrSa-01, the faint and mysterious neighbor of Andromeda Galaxy

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StDrSa-01, the faint and mysterious neighbor of Andromeda Galaxy

People have been taking photographs of Andromeda Galaxy for over 130 years (the first photo was Dec 29, 1888 by Isaac Roberts)
But only recently did amateur astronomers, Xavier Strottner, Marcel Drechsler, and Yann Sainty, discover an OIII emission arc right next to it.
They used over 100 hours of data to capture and bring out this ultra-faint nebula, never seen before.
I was pleasantly surprised that I could just barely reveal this new discovery with "only" 48 hours of data, from my home.

This link has a much better image and description from the discoverers: themselves:

https://www.astrobin.com/1d8ivk/H/

Original
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C

Description: OIII only, inverted

Uploaded: ...

D

Description: monochrome, uncropped

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F

Description: Animated gif, showing Ha and OIII contribution

Uploaded: ...

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Astrometry.net job	8805320
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StDrSa-01, the faint and mysterious neighbor of Andromeda Galaxy

StDrSa-01, the faint and mysterious neighbor of Andromeda Galaxy

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StDrSa-01, the faint and mysterious neighbor of Andromeda Galaxy

StDrSa-01, the faint and mysterious neighbor of Andromeda Galaxy

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