Celestial hemisphere:  Northern  ·  Constellation: Draco (Dra)  ·  Contains:  NGC 6654  ·  PGC 61821
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NGC 6654, 



    
        

            Gary Imm
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NGC 6654

Getting plate-solving status, please wait...
NGC 6654, 



    
        

            Gary Imm
Powered byPixInsight

NGC 6654

Acquisition details

Dates:
May 1, 2020 ·  May 7, 2020
Frames:
Astrodon Gen2 I-Series Tru-Balance Blue: 30×120(1h) (gain: 139.00) -20°C bin 1×1
Astrodon Gen2 I-Series Tru-Balance Green: 30×120(1h) (gain: 139.00) -20°C bin 1×1
Astrodon Gen2 I-Series Tru-Balance Lum: 60×120(2h) (gain: 139.00) -20°C bin 1×1
Astrodon Gen2 I-Series Tru-Balance Red: 30×120(1h) (gain: 139.00) -30°C bin 1×1
Integration:
5h
Avg. Moon age:
11.44 days
Avg. Moon phase:
78.63%

RA center: 18h24m07s.948

DEC center: +73°1102.11

Pixel scale: 0.281 arcsec/pixel

Orientation: -0.656 degrees

Field radius: 0.195 degrees

More info:Open 

Resolution: 3956x3040

File size: 4.8 MB

Locations: Backyard (Mag 20.8 - Bortle 4.5), Onalaska, Texas, United States

Data source: Backyard

Description

This object is a face-on barred lenticular galaxy located 90 million light years away in the constellation of Draco at a declination of +73 degrees. This 12th magnitude galaxy spans 2.5 arc-minutes in our apparent view, which corresponds to an actual diameter of 70,000 light years.

I find the barred core area to be interesting. I like the short stubby arms which seem to want to grow out of the bar ends.

I imaged this galaxy because I was curious about the dark spot in the galaxy disk to the upper right (northwest) that I saw in the DSS survey image. It could simply be an area of foreground Milky Way dust, but the disk has similar (but fainter) dark areas on the upper left side of the disk, as well as some on the outer edge of the lower right side. Other than the dark areas, the disk looks fairly uniform in brightness.

Perhaps a former companion or two caused these dark areas before being absorbed into the disk, or perhaps they are still there but are not easily visible. This is another galaxy with interesting questions yet to be answered.

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