NGC1579 The Northern Trifid Nebula - RGB in full moonlight (Göran Nilsson)

Celestial hemisphere: Northern · Constellation: Perseus (Per) · Contains: NGC 1579 · Sh2-222

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NGC1579 The Northern Trifid Nebula - RGB in full moonlight

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NGC1579 The Northern Trifid Nebula - RGB in full moonlight

I am back from the south Pacific to a wet and damp winter in Sweden. However, it did clear up on Sunday night and I aimed at the Northern Trifid Nebula. Since the moon was virtually full, my plan was to collect Ha with the Esprit 150 and ASI1600 mono. Since my Esprit 100 was sitting next to it, I though what the heck, I put my ASI071 on it and collect some RGB that I could maybe use for star colour later. I got about 7 hours with each scope, but the Ha data was quite uninteresting. Not much structure there and seeing was apparently not the best - probably ice crystals in the sky, so guiding suffered too (ca 1.3" RMS).

To my surprise, the RGB data looked much more interesting. Maybe it was because of running many short exposures (140 x 3 min) in an effort to not be totally blinded by the moon. Not sure that this is supported by theory but it may have been the reason why the data looked usable. So here it is, RGB from an OSC under a nearly full moon. Obviously, a really dark night with great guiding would have brought out more details, but.....

Original
B
C
D
Final
E

B

Description: The red in the sky was probably caused by a gradient so here the red sky has been desaturated

Uploaded: ...

C

Description: Found the sky a bit too bright so I tuned it down.

Uploaded: ...

The OSC Club (One Shot Camera)
ASI 071 mcc

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Status	Advanced success
Started	...
Astrometry.net job	3370665
PixInsight job	MAGHEUBYSIELJ91ERLV4TJZ3H39B5NQR
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	04h30m09s.34
RA (top/left)	04h25m48s.34
RA (top/right)	04h35m19s.26
RA (bottom/right)	04h34m35s.67
RA (bottom/left)	04h24m54s.36

Dec (center)	+35°16′47″.1
Dec (top/left)	+34°26′03″.6
Dec (top/right)	+34°39′36″.8
Dec (bottom/right)	+36°06′44″.8
Dec (bottom/left)	+35°53′08″.2

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NGC1579 The Northern Trifid Nebula - RGB in full moonlight

NGC1579 The Northern Trifid Nebula - RGB in full moonlight

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NGC1579 The Northern Trifid Nebula - RGB in full moonlight

NGC1579 The Northern Trifid Nebula - RGB in full moonlight

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