Dark Tower of Centaurus (Gum 48a / RCW 75) (Alexandr Zaytsev)

Dark Tower of Centaurus (Gum 48a / RCW 75)

Revision title: The destruction of Barad-dur scene found in the Southern sky

Link: https://coalsack.online/chilescope/Cen_2023Q2/Gum48a_T3_19x600s_HHOO_a3_at.jpg

3h 10min of integral Ha & OIII exposure of Gum 48a (aka RCW 75) HII region [1] around HD 115669 star, complete with Stock 16 open cluster (very "young" one - "only" of 4–6 Myr of age) [2] at the "top" of the "tower" - captured remotely using Telescope #3 (ASA-N D = 0.5m f/3.8, FLI ProLine 16803) system of ChileScope on 5 separate imaging sessions carried out on May 2, 14, 15, 18, 20, 2023. The color mapping on the original revision and revisions B and C is Ha, Ha, OIII, OIII to LRGB.

[1] http://galaxymap.org/cat/view/gum/48a

[2] https://articles.adsabs.harvard.edu/pdf/1985ApJ...292..148T

A wider FOV image for the same area obtained with T5 instrument of Chilescope is available under [3]:

[3] https://www.astrobin.com/9sfvqt/

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: Ha only view to the scene

Description: (1h 40min integral Ha exposure - a subset of the Ha & OIII exposure from the original revision)

Uploaded: ...

E

Title: Ha only view to the scene with partial star suppression applied

Description: (1h 40min integral Ha exposure - a subset of the Ha & OIII exposure from the original revision)

Uploaded: ...

F

Title: Ha only view to the scene with full star suppression applied

Description: (1h 40min integral Ha exposure - a subset of the Ha & OIII exposure from the original revision)

Uploaded: ...

G

Title: The destruction of Barad-dur scene found in the Southern sky

Description: (HHOO colors, full star suppression)

Uploaded: ...

H

Title: The destruction of Barad-dur scene found in the Southern sky

Description: (Ha only, full star suppression)

Uploaded: ...

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