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Contains:  M 21, NGC 6531, Trifid nebula, M 20, NGC 6514
Getting plate-solving status, please wait...
M20: Trifid Nebula, 


            Chris Sullivan
M20: Trifid Nebula

M20: Trifid Nebula

Technical card

Resolution: 5264x3622

Dates:June 25, 2017July 8, 2018

Orion SkyGlow 2" Astrophotography Filter: 117x60" (gain: 10.00)
Orion SkyGlow 2" Astrophotography Filter: 20x220" (gain: 11.00)

Integration: 3.2 hours

Avg. Moon age: 12.97 days

Avg. Moon phase: 15.24%

Bortle Dark-Sky Scale: 6.00 job: 2138443

RA center: 270.619 degrees

DEC center: -22.950 degrees

Pixel scale: 1.032 arcsec/pixel

Orientation: 86.154 degrees

Field radius: 0.916 degrees

Data source: Traveller


Just a quick and noisy image while traveling with the refractor and one-shot color camera all while I continue to work on three longer term projects. I really need to do this subject with the Newtonian and monochrome camera some day.

It's not enough integration time, but it's a little too low to shoot from home. I also get blocked pretty soon from my parents' place in NJ, which is why it's only 2-3 hours. I tried stacking with my data from the faulty refractor from last year ( but it didn't work. I was still able to incorporate some of it via layering, but it didn't help reduce the noise. The star field is made up of less than 2 hours of integration time. Maybe I can work on it again next year as well. I also had a lot of flex with my guide scope - perhaps I need an off axis guider for the color camera...



Chris Sullivan
License: None (All rights reserved)


  • Final
    M20: Trifid Nebula, 


            Chris Sullivan
  • M20: Trifid Nebula, 


            Chris Sullivan



Sky plot

Sky plot


M20: Trifid Nebula, 


            Chris Sullivan