Celestial hemisphere:  Southern  ·  Constellation: Circinus (Cir)
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Compact dark nebulae complex on the Eastern side of the Circinus molecular cloud, 



    
        

            Alexandr Zaytsev

Compact dark nebulae complex on the Eastern side of the Circinus molecular cloud

Revision title: Rotation / crop of the original frame emphasizing the dark nebulae component even more

Getting plate-solving status, please wait...
Compact dark nebulae complex on the Eastern side of the Circinus molecular cloud, 



    
        

            Alexandr Zaytsev

Compact dark nebulae complex on the Eastern side of the Circinus molecular cloud

Revision title: Rotation / crop of the original frame emphasizing the dark nebulae component even more

Equipment

Imaging Telescopes Or Lenses
ASA N20 / 20N
Imaging Cameras
FLI PL16803

Acquisition details

Dates:
March 16, 2023
Frames:
67×180(3h 21′)
Integration:
3h 21′
Avg. Moon age:
23.67 days
Avg. Moon phase:
34.13%

RA center: 15h27m10s.1

DEC center: -61°0256

Pixel scale: 0.957 arcsec/pixel

Orientation: 52.524 degrees

Field radius: 0.430 degrees

Resolution: 2289x2289

File size: 7.3 MB

Data source: Amateur hosting facility

Remote source: ChileScope

Description

3h 21min of integral RGB exposure of an area on the Eastern side of the Circinus molecular cloud complex (G317-4) featuring multiple dark nebulae - 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 Mar 1, 2, 16, 18, 2023.


There are several small features of interest here:

(a) "Little rhombus" cluster - closer to the middle of the original image:

image.png

(b) Hen 2-113 / PK321-03.1 planetary nebula [1, 2] - closer to the bottom of the original image:

image.png

(c) Possibly yet another Herbig-Haro object in the right bottom corner of the original image:

image.png

[1] https://www.aanda.org/articles/aa/full/2006/10/aa3803-05/aa3803-05.html

[2] https://www.aanda.org/articles/aa/full/2006/10/aa3803-05/aa3803-05.html


Wider angle views of the area captured using Chilescope T5 [3] and T4 [4] instruments are also available:

[3] https://www.astrobin.com/4yov1p/

[4] https://www.astrobin.com/ds988c/


The close-up views of other portions of the Circinus molecular cloud obtained with Chilescope T3 instrument are available under [5] and [6]:

[5] https://www.astrobin.com/icsgmf/

[6] https://www.astrobin.com/h6b5pv/

Comments

Revisions

  • Compact dark nebulae complex on the Eastern side of the Circinus molecular cloud, 



    
        

            Alexandr Zaytsev
    Original
  • Compact dark nebulae complex on the Eastern side of the Circinus molecular cloud, 



    
        

            Alexandr Zaytsev
    B
  • Compact dark nebulae complex on the Eastern side of the Circinus molecular cloud, 



    
        

            Alexandr Zaytsev
    C
  • Final
    Compact dark nebulae complex on the Eastern side of the Circinus molecular cloud, 



    
        

            Alexandr Zaytsev
    D

B

Title: Tighter crop on the dark nebulae area of the original frame

Uploaded: ...

C

Title: Annotated version of the B component of the original RGB image

Uploaded: ...

D

Title: Rotation / crop of the original frame emphasizing the dark nebulae component even more

Uploaded: ...

Sky plot

Sky plot

Histogram

Compact dark nebulae complex on the Eastern side of the Circinus molecular cloud, 



    
        

            Alexandr Zaytsev