Hemisphere:  Southern  ·  Constellation: Sagittarius (Sgr)  ·  Contains:  M 20  ·  NGC 6514  ·  Trifid nebula
M20 - Trifid Nebula, 


            Jeff Clayton
M20 - Trifid Nebula
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M20 - Trifid Nebula

Technical card

Imaging telescopes or lenses: CELESTRON EdgeHD 800

Imaging cameras: QHY8L OSC

Mounts: Orion Atlas EQ-G

Guiding telescopes or lenses: Orion ShortTube 80 Guide Scope

Guiding cameras: Orion Starshoot Auto-Guider

Focal reducers: Celestron .7x Focal Reducer for Edge 8"

Dates:June 3, 2016

Frames: 6x300"

Integration: 0.5 hours

Avg. Moon age: 27.67 days

Avg. Moon phase: 3.87%

Basic astrometry details

Astrometry.net job: 1107997

RA center: 18h 2' 18"

DEC center: -23° 3' 32"

Pixel scale: 1.588 arcsec/pixel

Orientation: -76.322 degrees

Field radius: 0.542 degrees

Resolution: 620x410


This is first light night with my edge hd 800. I could not get my guiding to work like it should. I have been able to do 10 min subs with my 80mm with a short focal length, but this 8" SCT provided a nice challenge for the guiding. I was not able to solve my issues yet, but i will keep at it. any advice would be greatly appreciated for setting PHD with a longer focal length OTA. Thanks for looking!


Sky plot

Sky plot


M20 - Trifid Nebula, 


            Jeff Clayton