The Omega Nebula (astropical)

Celestial hemisphere: Southern · Constellation: Sagittarius (Sgr) · Contains: Checkmark Nebula · HD168098 · HD168163 · HD168164 · HD168276 · HD168302 · HD168447 · HD168521 · HD168569 · HD168585 · HD168607 · HD168625 · HD168701 · HD168816 · HD168857 · HD168859 · HD168919 · HD168934 · HD168970 · HD169035 · IC 4706 · IC 4707 · Lobster Nebula · M 17 · NGC 6618 · Swan Nebula · omega Nebula

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The Omega Nebula

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The Omega Nebula

Since clouds are always higher up than myself this was an uphill battle during which I had 50% light frame casualties ending up with merely an hour of total integration. PHD2 kept throwing nasty messages, such as "star lost" or "star mass changed" while SharpCap often lost the link to PHD2. Always thought that deepsky imaging is only set up the gear and then lean back and relax for hours with a tropical drink. No way.

Anyway, the target for this mostly out-clouded summer was imaging of at least the four most popular jewels in the Sagittarius region of the Milky Way, namely the Lagoon, Trifid, Omega and Eagle nebulae.

Rev B is a wide field of the region.

In SharpCap4 Pro I used Live Stacking and in parallel saved each light separately as FITS. In its Live Stack mode SharpCap can communicate with PHD2 for dithering and pausing when PHD2 does not autoguide or skips a light frame in case its FHWM exceeds a selected threshold. Also, darks have been substracted while stacking and saving as FITS.

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Final
Original
B

B

Title: Wide Field

Description: D5500, 50mm, f2.8, ISO800, 30 x 60 sec.

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	8346807
PixInsight job	EYCPTADIXLWU3ZUFQFUD6Q0M8DOQIWFD
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	18h21m00s.15
RA (top/left)	18h23m20s.23
RA (top/right)	18h18m02s.34
RA (bottom/right)	18h18m39s.38
RA (bottom/left)	18h23m58s.26

Dec (center)	-16°10′50″.7
Dec (top/left)	-15°41′16″.8
Dec (top/right)	-15°57′16″.4
Dec (bottom/right)	-16°40′18″.1
Dec (bottom/left)	-16°24′15″.1

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The Omega Nebula

The Omega Nebula

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