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Contains:  M 43, NGC 1982, M 42, Great Nebula in Orion, NGC 1976, The star θ2Ori, The star θ1Ori
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M42 Orion Nebula, 





    
        

            Michael Southam
M42 Orion Nebula

M42 Orion Nebula

Technical card

Resolution: 4092x3280

Dates:Dec. 5, 2015

Frames: 40x300" ISO200

Integration: 3.3 hours

Darks: ~10

Avg. Moon age: 24.07 days

Avg. Moon phase: 30.11%

Astrometry.net job: 874440

RA center: 83.752 degrees

DEC center: -5.419 degrees

Pixel scale: 0.726 arcsec/pixel

Orientation: -156.053 degrees

Field radius: 0.529 degrees

Locations: Home Observatory, Shelton, Connecticut, United States

Description

This is my second attempt at M42 and my first guided image using a borrowed SBIG ST-i Guider. I took 40 x 300 second luminance subs and 10 x 20 second darks. I discarded 3 luminance frames due to minor star trails and stacked the balance. Took me a while to get the nebula in the center of the ring created by the focal reducer but once there, guide setup went quickly. I could see that the full 40 frames would take me to about 2am when M42 would be well past the Meridian and probably past the point of mount flip. I got the full 40 frames without a flip but PHD guiding failed to control the mount 2 frames before the end.

Very pleased with the end result compared to the same target this time last year.

Comments

Author

msoutham
Michael Southam
License: Attribution-NonCommercial-ShareAlike Creative Commons
6131
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Revisions

  • M42 Orion Nebula, 





    
        

            Michael Southam
    Original
  • M42 Orion Nebula, 





    
        

            Michael Southam
    B
  • M42 Orion Nebula, 





    
        

            Michael Southam
    C
  • Final
    M42 Orion Nebula, 





    
        

            Michael Southam
    D

Sky plot

Sky plot

Histogram

M42 Orion Nebula, 





    
        

            Michael Southam

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