RCW 85 HII region / SFO 74 in Centaurus in Ha (Alexandr Zaytsev)

RCW 85 HII region / SFO 74 in Centaurus in Ha

Revision title: A narrower FOV view to the nebula with full star suppression applied

Link: https://coalsack.online/chilescope/Cen_2023Q1/RCW85_T3_z3_10x600s_Ha_a3_at.jpg

1h 40min of integral Ha exposure of RCW 85 HII region / SFO (Star Forming Region) 74 [1-3] around HD 125158 star [4] - captured remotely using Telescope #3 (ASA-N D = 0.5m f/3.8, FLI ProLine 16803) system of ChileScope on Mar 28, 2023.

[1] http://galaxymap.org/cat/view/rcw/85

[2] https://arxiv.org/abs/1411.1813

[3] https://arxiv.org/pdf/1411.1813.pdf

[4] https://simbad.cds.unistra.fr/simbad/sim-id?Ident=HD+125158&NbIdent=1&Radius=2&Radius.unit=arcmin&submit=submit+id

The original resolution images of revisions B and C are available under [5] and [6]:

[5] https://coalsack.online/chilescope/Cen_2023Q1/RCW85_T3_z3_10x600s_Ha_a3_stl_at.jpg

[6] https://coalsack.online/chilescope/Cen_2023Q1/RCW85_T3_z3_10x600s_Ha_a3_stl2_at.jpg

A wider FOV image of the central part of Cir-Cen starfield obtained with Chilescope T4 instrument are also available under [7]:

[7] https://www.astrobin.com/gcqtmj/

The region has many remarkable features, such as the "tip rim" area:

and the dark clouds in the "rear":

A narrower FOV image of the "tip rim" area of this region in Ha obtained with Chilescope T1 instrument is also available under [8]:

[8] https://www.astrobin.com/s69kvh/

Original
B
C
Final
D
E

B

Title: Version of the original image with partial star suppression applied

Uploaded: ...

C

Title: Version of the original image with full star suppression applied

Uploaded: ...

D

Title: A narrower FOV view to the nebula with full star suppression applied

Description: ("Deep space thundercloud" edition=)

Uploaded: ...

E

Title: Version of the original image with an overlay of a narrower FOV image obtained with Chilescope T1 instrument later [8]

Uploaded: ...

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