Hemisphere:  Southern  ·  Contains:  NGC 1792  ·  NGC1792
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NGC 1792: A Chaotic Starburst Galaxy, 


            Russ Carpenter
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NGC 1792: A Chaotic Starburst Galaxy

Technical card

Dates:Jan. 8, 2021

Frames: 15x600"

Integration: 2.5 hours

Avg. Moon age: 24.41 days

Avg. Moon phase: 26.89%

Astrometry.net job: 4149437

RA center: 5h 5' 15"

DEC center: -37° 59' 5"

Pixel scale: 0.966 arcsec/pixel

Orientation: -91.248 degrees

Field radius: 0.331 degrees

Resolution: 1810x1675

Data source: Amateur hosting facility

Remote source: ChileScope


I believe this is the is the first time NGC 1792 has been imaged and published by an amateur. But it has received a lot of attention from professional astronomers and has been imaged by Hubble and the European Southern Observatory.

The galaxy’s chaotic appearance is caused by the patchy distribution of dust in the disk. In the midst of the confusion, there are at least five spiral arms. Being a starburst galaxy, NGC 1792 is full of star-forming knots and the disk is very rich in H1.

One of the spiral arms is severely asymmetrical, leading astronomers to believe that NGC 1792 had a fly-by interaction with NGC 1808, an image of which I have also posted to Astrobin.

This galaxy is a “peculiar” galaxy, as defined by the Catalog of Southern Peculiar Galaxies and Associations, by Halton Arp and Barry Madore, With its disturbed spiral arm, it meets the requirements of Category 10. In addition, it has five companion galaxies, which complies with Category 5.

Tech Notes for ASA 500/3.6:
ASA Newtonian, 500 mm aperture, 1900mm focal length, F3.6
FLI Proline 16803, 9 mm pixel, 4096 X 4096
ASA DDM85 equatorial mount
Processing with PixInsight, StarTools, and Affinity Photo



Russ Carpenter
License: None (All rights reserved)

Sky plot

Sky plot


NGC 1792: A Chaotic Starburst Galaxy, 


            Russ Carpenter