Exploring Henize 2-111 / NGC 5617 region near Alpha Cen in Ha (Alexandr Zaytsev)

Exploring Henize 2-111 / NGC 5617 region near Alpha Cen in Ha

Link: https://coalsack.online/chilescope/Cen_2023Q2/Cen_He2111_T3_17x600s_Ha_b6_at.jpg

2h 50min of integral Ha exposure of an area around He 2-111 planetary nebula / NGC 5617 open star cluster in search for the diffuse structures in the area - captured remotely using Telescope #3 (ASA-N D = 0.5m f/3.8, FLI ProLine 16803) system of ChileScope observatory over 4 imaging sessions carried out on Jun 6, 7, 10, 12, 2023.

This is continuation of work started using T5 Chilescope instrument back to Apr 2023 [1] (similar annotations used by manually annotated revisions under this image obtained with T3 Chilescope instrument):

[1] https://www.astrobin.com/nuqbfs/E/

The "Nebula R1" and "Nebula R2" features seen in this image are independently confirmed by recent image by @Bray Falls and @Chester Hall-Fernandez [2]:

[2] https://www.astrobin.com/uxq618/

Subframes of this image for NGC 5617 cluster and He 2-111 nebula are also published separately under [3] and [4] respectively:

[3] https://www.astrobin.com/imvhbn/

[4] https://www.astrobin.com/e0yzzf/

B

Title: Manually annotated version of the image under original revision

Uploaded: ...

C

Title: A narrower FOV subframe of the original image for better view of two main objects in the view (He 2-111 / NGC 5617)

Uploaded: ...

D

Title: Revision C with partial star suppression applied for better visibility of the diffuse structures in the background

Uploaded: ...

E

Title: Manually annotated version of the image under revision C

Uploaded: ...

F

Title: Manually annotated version of the image under revision D

Uploaded: ...

G

Title: Revision C with full star suppression applied

Uploaded: ...

H

Title: Manually annotated version of the image under revision G

Uploaded: ...

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Status	Advanced success
Started	...
Astrometry.net job	8044167
PixInsight job	HCWY788OJ2OAG33ZQ1C2JJQD71Z3NKRC
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	14h31m42s.414
RA (top/left)	14h35m54s.835
RA (top/right)	14h27m28s.364
RA (bottom/right)	14h27m22s.120
RA (bottom/left)	14h36m04s.294

Dec (center)	-60°46′51″.60
Dec (top/left)	-60°18′55″.63
Dec (top/right)	-60°19′05″.93
Dec (bottom/right)	-61°14′23″.78
Dec (bottom/left)	-61°14′08″.18

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