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


            Ray Morris
M-42 HDR
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M-42 HDR

Technical card

Imaging telescope or lens:CELESTRON 8

Imaging camera:Canon DSLR EOS 60da


Guiding telescope or lens:Orion 80mm Short Tube

Guiding camera:Celestron NexGuide

Focal reducer:Starizona SCT Corrector f/7.5

Software:DeepSkyStackerO'Telescope BackyardEOSAdobe Photoshop CS3

Dates:Oct. 1, 2014

20x120" ISO1000
25x300" ISO1000
20x20" ISO800

Integration: 2.9 hours

Darks: ~10

Bias: ~20

Avg. Moon age: 7.06 days

Avg. Moon phase: 46.58%

Bortle Dark-Sky Scale: 5.00

Basic astrometry details job: 2916303

RA center: 5h 34' 58"

DEC center: -5° 25' 12"

Pixel scale: 0.931 arcsec/pixel

Orientation: 85.181 degrees

Field radius: 0.425 degrees

Resolution: 2700x1875

Locations: Douglas Springs Trailhead, Tucson, AZ, Tucson, Arizona, United States

Data source: Backyard


Been over 5 years since I posted anything here. Been working with older data. This is a combination of exposures layered in Photoshop CS 3 to preserve the Trapezium structure. Converted to HDR using freeware called Luminance HDR.



Ray Morris
License: None (All rights reserved)

Sky plot

Sky plot


M-42 HDR, 


            Ray Morris

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O'Telescope BackyardEOS