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Contains:  NGC 2146
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NGC 2146 - Dusty Hand Galaxy - Barred Spiral in Camelopardalis, 





    
        

            Ben Koltenbah
NGC 2146 - Dusty Hand Galaxy - Barred Spiral in Camelopardalis

NGC 2146 - Dusty Hand Galaxy - Barred Spiral in Camelopardalis

Technical card

Resolution: 4419x3505

Dates:Dec. 20, 2017

Frames:Astrodon Gen2E L: 24x300" bin 1x1

Integration: 2.0 hours

Avg. Moon age: 1.97 days

Avg. Moon phase: 4.33%

Astrometry.net job: 1875670

RA center: 95.225 degrees

DEC center: 78.425 degrees

Pixel scale: 0.441 arcsec/pixel

Orientation: 359.721 degrees

Field radius: 0.346 degrees

Description

This is an image mostly featuring NGC 2146, a barred spiral in Camelopardalis. It is commonly named the Dusty Hand Galaxy. It is located at a declination of +78 deg, which places it close to the NGP. I think this is actually the highest declination object that I've ever imaged. One could in principle image it at my latitude (47 deg N) all night long at practically any time of the year.

The main feature of this galaxy is a spiral arm, distinguished as a dusty lane that lies across the brighter core, which has been bent 45 deg by a smaller galaxy possibly about 800 My ago. It is thought that this encounter is the cause of a relatively high rate of star formation, designating this as a starburst galaxy.

There was a supernova SN 2005V discovered Jan 30, 2005. Now almost 13 years later this SN is not really distinguishable anymore. It was located almost dead center just to the left of the core in my image. I can see a brighter region there, but I think that's just associated with the core itself, not the SN. I looked up some images shortly after the event, and SN 2005V was a typically bright point of light, distinctively brighter than any other part of the galaxy.

The smaller galaxy upper left in my image is NGC 2146A, thought to be in close proximity to NGC 2146 and the cause for the warping of the spiral arm and activation of starbursts.

This was a single night of imaging, but I was able to use 4 hr of integration time. I had some guidance issues and cable drag that caused the stars to go oblong. I hope to return to it and try again.

Comments

Author

BenKolt
Ben Koltenbah
License: None (All rights reserved)
780
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Revisions

  • NGC 2146 - Dusty Hand Galaxy - Barred Spiral in Camelopardalis, 





    
        

            Ben Koltenbah
    Original
  • NGC 2146 - Dusty Hand Galaxy - Barred Spiral in Camelopardalis, 





    
        

            Ben Koltenbah
    B
  • NGC 2146 - Dusty Hand Galaxy - Barred Spiral in Camelopardalis, 





    
        

            Ben Koltenbah
    C
  • Final
    NGC 2146 - Dusty Hand Galaxy - Barred Spiral in Camelopardalis, 





    
        

            Ben Koltenbah
    D

B

Inverted L Image

C

Annotated L Image

D

Updated L Image - more aggressive noise reduction

Sky plot

Sky plot

Histogram

NGC 2146 - Dusty Hand Galaxy - Barred Spiral in Camelopardalis, 





    
        

            Ben Koltenbah

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