NGC 7822 - Sh2-171 in SHO with RGB stars (Uwe Deutermann)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: HD224826 · HD225136 · HD225216 · LBN 580 · LBN 581 · LBN 582 · LBN 583 · LBN 584 · LBN 586 · LBN 587 · LBN 588 · LBN 589 · LDN 1267 · LDN 1268 · LDN 1269 · LDN 1270 · LDN 1271 · LDN 1273 · LDN 1275 · NGC 7822 · Sh2-171

NGC 7822 - Sh2-171 in SHO with RGB stars

My third attempt to tackle this (at least for me) very difficult to process target. And a more challenging one for the new Antlia OIII filter, which mastered it with flying colors! In this area are a lot of blue stars (which is unusual, well, a lot of my images that I processed so far did not have that many). And some of them are fairly bright, no halos, soft and smooth, love this filter already 😊. The Baader Hα was compared to the Antlia much worse, a big fat halo on the left star which was quite challenging to get rid of.

My previous attempts always lacked the OIII signal being strong enough (see version D), and even if it was not as crucial this time (I believe due to the sensitivity of the 6200) I still had to push the OIII channel more than the other 2 channels. Hα is very dominant, but in order to create a more variant and deeper image this was needed.

Due to the horrendous weather here since the beginning of November I am running now lower and lower on my backlog ... this has to change soon 🤞🤞🤞!

CS for all!

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Title: Annotated image

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Title: full frame image

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Title: 2018-2019-2022 comparison

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Sharpless2 Objects
AstroBin Platform open discussions community forum
Suburban Astrophotography
ASI 6200 MM Pro
Florida / Georgia Imagers
Narrowband imaging

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Status	Advanced success
Started	...
Astrometry.net job	6622054
PixInsight job	Q7VYEKZGRLLJLIMAL7J8ES6LZHBYEUN3
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	00h03m25s.512
RA (top/left)	00h11m26s.827
RA (top/right)	00h07m13s.952
RA (bottom/right)	23h54m42s.596
RA (bottom/left)	23h59m58s.118

Dec (center)	+67°38′41″.22
Dec (top/left)	+66°40′55″.53
Dec (top/right)	+68°49′55″.10
Dec (bottom/right)	+68°34′53″.51
Dec (bottom/left)	+66°26′58″.91

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NGC 7822 - Sh2-171 in SHO with RGB stars

NGC 7822 - Sh2-171 in SHO with RGB stars

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NGC 7822 - Sh2-171 in SHO with RGB stars

NGC 7822 - Sh2-171 in SHO with RGB stars

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