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Contains:  M 43, NGC 1982, NGC 1977, NGC 1980, M 42, Great Nebula in Orion, NGC 1976, NGC 1975, NGC 1973, The star 45Ori, The star ιOri, The star θ2Ori, The star θ1Ori, The star 42Ori
Getting plate-solving status, please wait...
Deep look at M42 and SH2-279, 





    
        

            Kevin Morefield

Deep look at M42 and SH2-279

Technical card

Imaging telescope or lens:Planewave CDK14

Imaging camera:SBIG STX 16803

Mount:Paramount ME II

Guiding telescope or lens:Planewave CDK14

Guiding camera:QHYCCD 367C

Software:Adobe Photoship CCCCDWare CCDAutoPilot 5CCDWare CCDStack 2

Filters:Astrodon LuminanceAstrodon BlueAstrodon GreenAstrodon Red

Resolution: 7152x4048

Dates:Nov. 18, 2018

Frames:
Astrodon Blue: 67x600" -20C bin 1x1
Astrodon Green: 56x600" -20C bin 1x1
Astrodon Luminance: 34x600" -20C bin 1x1
Astrodon Red: 58x600" -20C bin 1x1

Integration: 35.8 hours

Darks: ~20

Flats: ~20

Bias: ~20

Avg. Moon age: 10.00 days

Avg. Moon phase: 76.42%

Bortle Dark-Sky Scale: 3.00

Astrometry.net job: 2394642

Locations: Sierra Remote Observatory, Auberry, California, United States

Data source: Own remote observatory

Remote source: Sierra Remote Observatories

Description

The Orion Nebula is often the first object we shoot when starting deep sky astrophotography. I think I've shot this with every set of equipment I've owned! I had some data from two years ago that wasn't sufficient so I added more this year with the goal of going deep. I wound up with 35.8 hours of usable primary data plus 3.25 hours on the core.

The core is comprised of 120 second subs, all RGB as there was no need to shoot luminance when the object is too bright to start with. I pulled two separate stretches from the core data to try and resolve the Triangulum as best as I could. A round of shorter exposures is probably needed.

The background is 17-18 hours per side and I pulled two separate stretches from each master. One for the dimmer bits and one for the brighter parts.

LRGB masters were assembled in CCDStack. The different stretches and the core were assembled using layers in Photoshop. After joining the Mosaic in Photoshop, I took a 16bit master back to CCDStack for deconvolution and sharpening. Then back to Photoshop for final processing.

Comments

Author

morefield
Kevin Morefield
License: None (All rights reserved)
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Revisions

  • Deep look at M42 and SH2-279, 





    
        

            Kevin Morefield
    Original
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            Kevin Morefield
    B
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            Kevin Morefield
    C
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    D
  • Deep look at M42 and SH2-279, 





    
        

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    E
  • Final
    Deep look at M42 and SH2-279, 





    
        

            Kevin Morefield
    F

B

Color balance

C

Color balance again

D

brightness and contrast

E

additional noise and star reduction

F

color balance again...

Histogram

Deep look at M42 and SH2-279, 





    
        

            Kevin Morefield