RCW89 S. Hemisphere Objects (HORGB True Color) (Alex Woronow)

Celestial hemisphere: Southern · Constellation: Circinus (Cir)

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RCW89 S. Hemisphere Objects (HORGB True Color)

Powered byPixInsight

RCW89 S. Hemisphere Objects (HORGB True Color)

RCW89 S. Hemisphere Objects (HORGB True Color)

OTA: PW17 f/6.8
Camera: QHY 600 Pro
Observatory: Deep Sky West, Chile

Exposures:
R: 13 x 300 sec
G: 6 x 300
B: 12 x 300
H: 38 x 1800 sec
O: 12 x 1800
Total Exposure time used: 19.25 hours
Image Width: 42.5 arc minutes

Processing Tools:
1.   Commercial: PixInsight, Topaz (Studio2, Photo AI2), Aurora HDR, Luminar Neo, 3DLUT Creator, Photo Director
2.   Pixinsight Addons: NoiseXTerminator, BlurXTerminator, StarXTerminator, Normalize Scale Gradient
3.   My Scripts: NB_Assistant, AC_Restar, Subframe Weighting Tool

Target Description:
I cannot identify
•   One nebula--probably a planetary nebula.
•   One open cluster, also unidentified, but the telescope owner called it NGC 5823 (which it is not)
The nebula is marginally visible through the dense foreground of stars and the R stack just reveals the slightest hint of a nebula. The Ha shows much more and the OIII just shows about as much as did the R.

Processing Description:
After blinking and calibrating the subs, they were down-sampled to 60% size. NB_Assistant combined the narrow- and broad-band stacks into a true-color RGB image, which was subsequently stretched, underwent star removal, and processing in some of the programs listed above.

My surprise came when I plate-solved and annotated the image (in PI, Astrometry.net, and Astrobin) and found that none knew what that nebula was named. Any ideas?

Alex Woronow

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Status	Advanced success
Started	...
Astrometry.net job	8448386
PixInsight job	VBHKB1Q7MHH1V3ZMZ3D0OF4V1TI8JREP
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	15h13m36s.460
RA (top/left)	15h16m15s.181
RA (top/right)	15h10m59s.290
RA (bottom/right)	15h10m55s.974
RA (bottom/left)	15h16m15s.790

Dec (center)	-59°04′58″.13
Dec (top/left)	-58°51′27″.30
Dec (top/right)	-58°51′12″.43
Dec (bottom/right)	-59°18′15″.80
Dec (bottom/left)	-59°18′30″.51

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RCW89 S. Hemisphere Objects (HORGB True Color)

RCW89 S. Hemisphere Objects (HORGB True Color)

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Image Index:

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RCW89 S. Hemisphere Objects (HORGB True Color)

RCW89 S. Hemisphere Objects (HORGB True Color)

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