Antares, M4, NGC 6144, IC 4603 and IC 4605, and various dark nebulae (Stephen Kennedy)

Celestial hemisphere: Southern · Constellation: Scorpius (Sco) · Contains: 20 Sco) · 20 sig Sco · 21 Sco) · 21 alf Sco · 22 Sco · 22 i Sco · Al Niyat (σ Sco · Alniyat · Alniyat I · Antares · Cor Scorpii · HD147255 · HD147283 · HD147284 · HD147343 · HD147384 · HD147414 · HD147491 · HD147592 · HD147648 · HD147649 · HD147701 · HD147702 · HD147743 · HD147809 · HD147889 · HD147955 · HD148117 · HD148152 · HD148212 · And 64 more.

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Antares, M4, NGC 6144, IC 4603 and IC 4605, and various dark nebulae

Powered byPixInsight

Antares, M4, NGC 6144, IC 4603 and IC 4605, and various dark nebulae

This image consists of a cropped portion of a three-panel mosaic and presents the viewer with two different star clusters, M4 (7,175 light years away) and NGC 6144 (33,000 light years from Earth), juxstapositioned with two blue reflection nebulae, IC 4603 and IC 4605 (about 400 light years away) with at least seven different dark nebulae, featuring LDN 1676, 1681, 1683, 1684, and others. The star of the show is Antares, a mere 554 light years away. The light photons captured in this image include some that have been travelling 33,000 years and others that have been travelling for "only" 554 years. All of this was captured from my backyard in Strawn, Texas.

Processing notes:
WBPP
Forr each panel: ABE, Mosaic by Coordinates, Trim Mosaic Tile
Photometric Mosaic to combine the panels
Dynamic Crop
ABE
SPCC
BlurX
HT
SCNR
Correct Magenta Stars
NoiseX
StarX
HDMRT
LHT
Export to Photoshop for levels adjustment curves adj., Camera Raw Filter adjustments
Imported back to PixInsight and ran the script to Enhance Dark Structures
Color Saturation to Starless image and separately to Star image
Screen Stars back to Image
Exported to Photoshop to Tweak black point using levels
Imported back to Pixinsight and saved as JPEG

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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.

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Status	Advanced success
Started	...
Astrometry.net job	7910116
PixInsight job	CRJ3JICS2MQJ121I2AQK0C8TI8GW1FOC
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	16h28m23s.307
RA (top/left)	16h35m25s.397
RA (top/right)	16h20m39s.767
RA (bottom/right)	16h21m10s.206
RA (bottom/left)	16h36m16s.579

Dec (center)	-25°34′54″.30
Dec (top/left)	-24°04′18″.99
Dec (top/right)	-24°15′06″.12
Dec (bottom/right)	-27°04′18″.41
Dec (bottom/left)	-26°53′11″.77

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Antares, M4, NGC 6144, IC 4603 and IC 4605, and various dark nebulae

Antares, M4, NGC 6144, IC 4603 and IC 4605, and various dark nebulae

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Antares, M4, NGC 6144, IC 4603 and IC 4605, and various dark nebulae

Antares, M4, NGC 6144, IC 4603 and IC 4605, and various dark nebulae

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