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Contains:  Hercules Globular Cluster, M 13, NGC 6205, NGC 6207
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M13 again, 



    
        

            Gendra
M13 again
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M13 again

Technical card


Dates:April 24, 2020

Frames: 53x150" ISO400

Integration: 2.2 hours

Darks: ~19

Flats: ~27

Bias: ~60

Avg. Moon age: 1.26 days

Avg. Moon phase: 1.79%

Bortle Dark-Sky Scale: 6.00

Temperature: 18.00


Basic astrometry details

Astrometry.net job: 3455326

RA center: 16h 41' 44"

DEC center: +36° 27' 43"

Pixel scale: 0.761 arcsec/pixel

Orientation: 37.706 degrees

Field radius: 0.745 degrees


Resolution: 5889x3880

Data source: Traveller

Description

Another image of the great cluster in Hercules with a longer integration time and a nicer image circle (not chopping through NGC6207 like last time).

This time I optimized the balancing of the mount and therefore the guiding worked very well.

I'm always surprised how many thin galaxies you can find on top of the two annotated ones.
I've marked a few of them in version B like PGC2088997 and PGC3501310 in the upper left part or PGC2082344 next to the brighter star in the upper right part. But there are certainly much more to find and this always reminds me how vast the universe is compared to our small earth.

Comments

Author

Gendra
Gendra
License: None (All rights reserved)
520
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Revisions

  • Final
    M13 again, 



    
        

            Gendra
    Original
  • M13 again, 



    
        

            Gendra
    B

B

Description: a few of the galaxies in the image

Sky plot

Sky plot

Histogram

M13 again, 



    
        

            Gendra