IC4685, IC1274, IC1275 and NGC6559 in LHaRGB (Chris Jensen)

Celestial hemisphere: Southern · Constellation: Sagittarius (Sgr) · Contains: B302 · B303 · B91 · HD165690 · HD165705 · HD165813 · HD165858 · HD165872 · HD165921 · HD165922 · HD165999 · HD166000 · HD166032 · HD166033 · HD166056 · HD166079 · HD166107 · HD166192 · HD313874 · HD313875 · HD313877 · HD313884 · HD313885 · HD313886 · HD313887 · HD313888 · HD313889 · HD314013 · HD314014 · HD314015 · And 48 more.

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IC4685, IC1274, IC1275 and NGC6559 in LHaRGB

Revision title: Barnard 302 in HaRGB

Powered byPixInsight

IC4685, IC1274, IC1275 and NGC6559 in LHaRGB

Revision title: Barnard 302 in HaRGB

IC4685 is an emission nebula that is surrounded by other emission and reflection nebula. IC1274 and IC1275 are located at the bottom centre of the image and show hints of oxygen in their whispy blue gase structures. IC4685 is in the centre and is crossed with a winding dark nebula, B303, that can look like a river or a Chinese dragon. NGC6559 is an active star-forming region on the right side of the nebula, and it shows evidence of the recent birth of stars with impressive shock structures moving through the gas clouds.

This image was shot from Brisbane, Australia over three nights in July 2023. The vast bulk of the data captured is in LRGB with just under 2 hours of Ha added to the image to bring out the structure of the gas around IC4685 and better show B303.

Original
Final
B

B

Title: Barnard 302 in HaRGB

Description: Another reprocessing effort of data from last year. Revisiting the data I captured in the middle of 2023 with new processing skills that I have learnt over the last 7 months and making use of some of the new tools now available in Pixinsght. The focus again was to bring out the structure that I swamped in my last version by pushing colours and stretching too far. I really wanted to emphasise the dust lines more and to get to a more natural-looking image.

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Status	Advanced success
Started	...
Astrometry.net job	9137048
PixInsight job	SSJGLX7R0L31KF01PDKTRCLSBDMXVBXD
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	18h09m00s.79
RA (top/left)	18h12m02s.40
RA (top/right)	18h09m30s.46
RA (bottom/right)	18h06m00s.48
RA (bottom/left)	18h08m31s.12

Dec (center)	-23°54′26″.4
Dec (top/left)	-24°13′27″.8
Dec (top/right)	-23°09′14″.5
Dec (bottom/right)	-23°35′07″.4
Dec (bottom/left)	-24°39′32″.3

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IC4685, IC1274, IC1275 and NGC6559 in LHaRGB

Revision title: Barnard 302 in HaRGB

IC4685, IC1274, IC1275 and NGC6559 in LHaRGB

Revision title: Barnard 302 in HaRGB

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IC4685, IC1274, IC1275 and NGC6559 in LHaRGB

Revision title: Barnard 302 in HaRGB

IC4685, IC1274, IC1275 and NGC6559 in LHaRGB

Revision title: Barnard 302 in HaRGB

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