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Contains:  Trifid nebula, M 20, NGC 6514
Getting plate-solving status, please wait...
M20, 





    
        

            Joshua Judkins
M20

M20

Technical card

Resolution: 3902x3273

Dates:Aug. 9, 2018

Frames:
ZWO Ha 7nm 1.25": 13x30" (gain: 120.00) -10C bin 1x1
ZWO OIII 7nm 1.25": 18x30" (gain: 120.00) -10C bin 1x1
ZWO SII 7nm 1.25": 22x30" (gain: 120.00) -10C bin 1x1

Integration: 0.4 hours

Darks: ~20

Flats: ~20

Bias: ~59

Avg. Moon age: 27.30 days

Avg. Moon phase: 5.54%

Bortle Dark-Sky Scale: 7.00

Astrometry.net job: 2195662

RA center: 18h 2' 23"

DEC center: -23° 1' 55"

Pixel scale: 0.327 arcsec/pixel

Orientation: 83.158 degrees

Field radius: 0.231

Data source: Backyard

Description

Messier 20, or the Trifid Nebula is a stunning combination of several kinds of astronomical objects. In this image you can see a convergence of an open cluster of stars, emission nebula of ionized molecular hydrogen, and dark nebulae of dense dust and gas blocking light that make up the divisions between the clouds of hydrogen. The Trifid Nebula is an active star forming region about 5,000 light years away from Earth in the constellation Sagittarius and is easily visible with the naked eye.

I took these data on Thursday August 9, 2018. Seeing was below average and my southern skies are heavily light polluted by Boston, which is just 10 miles away. Had to keep exposures to 30s.

Luminance data was difficult to acquire due to light pollution and seeing, therefore created synthetic luminance by combination of Ha, OIII, and SII.

Comments

Author

chembio
Joshua Judkins
License: None (All rights reserved)
690
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Revisions

  • Final
    M20, 





    
        

            Joshua Judkins
    Original
  • M20, 





    
        

            Joshua Judkins
    B

B

playing around with CMYK

Sky plot

Sky plot

Histogram

M20, 





    
        

            Joshua Judkins