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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, PGC3081010, Sh2-279, Sh2-281, The star 42Ori, The star 45Ori, The star θ1Ori, The star θ2Ori, The star ιOri
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M 42 Orion Nebula, 



    
        

            Michael Timm
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M 42 Orion Nebula

Technical card


Dates:Dec. 30, 2019

Frames:
Baader Neodymium (Moon & Skyglow): 126x120" (gain: 120.00) -15C bin 1x1
Baader Neodymium (Moon & Skyglow): 128x30" (gain: 120.00) -15C bin 1x1

Integration: 5.3 hours

Darks: ~251

Flats: ~50

Flat darks: ~50

Avg. Moon age: 4.09 days

Avg. Moon phase: 17.75%

Bortle Dark-Sky Scale: 4.00


Astrometry.net job: 3154556

RA center: 5h 35' 21"

DEC center: -5° 22' 49"

Pixel scale: 1.405 arcsec/pixel

Orientation: -69.263 degrees

Field radius: 1.456 degrees


Resolution: 6174x4191

Locations: Backyard, Vechelde, Niedersachsen, Germany

Data source: Backyard

Description

I am not so sure about this one. I imaged M 42 several times with my RC. Of course this image totally benefits from its larger FoV, but when it comes to the nebula itself the images taken with the RC are showing more detail. Anyway, the outcome of this imaging session is good, i am satisfied with the image: The seeing was really poor, therefor the autoguiding was not so good. I combined the different exposure times in a HDR image and tried not to compress the dynamic range to much. Comparing this to my last M 42 taken with the RC and compressed more aggressive it looks like the colors are not so intense, but that is okay for me. I can not decide which 'look' i like more, this one ore the more colored one. Oh, and if you don't know which of my M 42 images i am referring to, it is this one:
M 42 taken with RC

[Edit]: To produce the HDR i stacked two images: One containing ALL subs, one containing only the short ones. I start to believe that this was not a good idea. I will reprocess this image, but this time with one image containing only the LONG ones and one containing only the SHORT ones. Maybe this will help to improve the result? (not sure, we will see)

[Edit2]: Indeed, the variant where long and short integration times separated lead to more intense colors and a 'cleaner' look. I think i like it better.

Comments

Author

khrrugh
Michael Timm
License: None (All rights reserved)
1830
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Revisions

  • M 42 Orion Nebula, 



    
        

            Michael Timm
    Original
  • M 42 Orion Nebula, 



    
        

            Michael Timm
    B
  • M 42 Orion Nebula, 



    
        

            Michael Timm
    C
  • M 42 Orion Nebula, 



    
        

            Michael Timm
    D
  • Final
    M 42 Orion Nebula, 



    
        

            Michael Timm
    E

B

Description: Reprocessed with long and short integration times separated during stacking process.

C

Description: Brigthened things up a little bit.

D

Description: Forgot to sharpen. Did this in this revision.

E

Description: Brightened up again.

Sky plot

Sky plot

Histogram

M 42 Orion Nebula, 



    
        

            Michael Timm