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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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M42 1000x1s + Autostakkert!3, 


M42 1000x1s + Autostakkert!3
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M42 1000x1s + Autostakkert!3

Technical card

Dates:Feb. 12, 2018

Frames: 1000x1" (gain: 30.00)

Integration: 0.3 hours

Darks: ~100

Flats: ~100

Avg. Moon age: 26.46 days

Avg. Moon phase: 10.28%

Basic astrometry details job: 1941025

RA center: 5h 35' 15"

DEC center: -5° 23' 16"

Pixel scale: 1.505 arcsec/pixel

Orientation: 64.824 degrees

Field radius: 0.335 degrees

Resolution: 1320x906

Data source: Backyard


After telescope setup, winds became gusty at up to 15mph. Rather than waste the clear sky, I experimented with many short exposures. Calibration, debayering and stacking were done in Autostakkert!3 using a single alignment point, best 75% of frames. The AS!3 output was processed in Photoshop. It took 20 minutes to capture the lights + darks + flats and a further 40 minutes to stack on a quad core Xeon workstation with 16Gb memory. The processing was carried out on a RAID0 drive consisting of 2x 480Gb SSD (striped).

Next time 2000x1s!



License: None (All rights reserved)

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M42 1000x1s + Autostakkert!3,