Elephant trunk nebula (hollo)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: B160 · B161 · B162 · B163 · B365 · B367 · Erakis · Erakis (μ Cep) · IC 1396 · LBN 451 · LBN 452 · LBN 455 · LBN 456 · LBN 457 · LDN · LDN 1083 · LDN 1085 · LDN 1086 · LDN 1087 · LDN 1088 · LDN 1090 · LDN 1092 · LDN 1093 · LDN 1095 · LDN 1096 · LDN 1097 · LDN 1098 · LDN 1099 · LDN 1101 · LDN 1102 · And 28 more.

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Elephant trunk nebula

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Elephant trunk nebula

I needed a (2-panel) mosaic to get all of this in the picture, so first try at one of these. It was also my first go with my DIY focusser, and my first shots in astronomical twilight (no more dark nights for a couple of months for me).

Original
Final
C
D

C

Description: Reprocessed with a refinement of the mosaic workflow and slightly different colour adjustment.

Uploaded: ...

D

Title: Just the trunk

Description: I've been spending twilight nights working out how to get more out of processing, but doing so brought out all the seems in my mosaic. So here's a crop of just the trunk. Processed in PixInsight, with use of colour masks to try and reveal details I hadn't before. Only 75minutes of integration (the rest for the main revision was on the other side of the nebula), so there is some background noise.

Uploaded: ...

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The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
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Status	Advanced success
Started	...
Astrometry.net job	5789386
PixInsight job	6I5SZEKV0W4WNWG4PGMC56N9S34JW67W
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	21h40m04s.53
RA (top/left)	21h49m46s.93
RA (top/right)	21h53m37s.51
RA (bottom/right)	21h29m20s.54
RA (bottom/left)	21h27m34s.40

Dec (center)	+57°28′17″.6
Dec (top/left)	+55°37′14″.9
Dec (top/right)	+58°53′43″.9
Dec (bottom/right)	+59°16′18″.9
Dec (bottom/left)	+55°57′50″.0

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Elephant trunk nebula

Elephant trunk nebula

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Elephant trunk nebula

Elephant trunk nebula

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