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Contains:  41 the01 Ori, 42 c Ori, 43 the02 Ori, 44 iot Ori, 45 Ori, De Mairan's nebula, Great Nebula in Orion, Hatysa, M 42, M 43, M43, NGC 1973, NGC 1975, NGC 1976, NGC 1977, NGC 1980, NGC 1981, NGC 1982, NGC 1999, NGC1973, NGC1975, NGC1977, NGC1980, NGC1981, NGC1999, Sh2-279, Sh2-281, The star 42Ori, The star 45Ori, The star θ1Ori, The star θ2Ori, The star ιOri, VdB44
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M42 and Running Man, 


            David Frost
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M42 and Running Man

Technical card

Dates:Jan. 26, 2020Jan. 27, 2020

Astrodon 3nm Ha: 12x1200" (gain: 26.00) -20C bin 1x1
Astrodon LRGB Gen2 E-Series Tru-Balance Filters: 10x240" (gain: 26.00) -20C bin 1x1

Integration: 4.7 hours

Darks: ~13

Flats: ~20

Avg. Moon age: 1.95 days

Avg. Moon phase: 4.47%

Bortle Dark-Sky Scale: 1.00 job: 3235727

RA center: 5h 35' 23"

DEC center: -5° 32' 13"

Pixel scale: 7.104 arcsec/pixel

Orientation: -94.593 degrees

Field radius: 1.551 degrees

Resolution: 1280x916

Locations: Marathon, Marathon, TX, None

Data source: Traveller


This was first light with my new QHY600. Liking what it can do so far!

This was 12x1200 sec Ha and 12x240 sec for each color channel, RGB.
Blue channel was shot with Chroma's blue 50mm square filter that cuts off at 420nm.

It was 6.4 hours total time.



David Frost
License: None (All rights reserved)


  • M42 and Running Man, 


            David Frost
  • Final
    M42 and Running Man, 


            David Frost

Sky plot

Sky plot


M42 and Running Man, 


            David Frost