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Contains:  Extremely wide field
Getting plate-solving status, please wait...
Orion Widefield - Test, 





    
        

            Pat Darmody
Orion Widefield - Test

Orion Widefield - Test

Technical card

Resolution: 5118x3348

Dates:Dec. 19, 2015

Frames:CLS-CCD: 3x60" ISO800

Integration: 0.1 hours

Darks: ~4

Flats: ~30

Bias: ~40

Avg. Moon age: 8.32 days

Avg. Moon phase: 59.87%

Bortle Dark-Sky Scale: 5.00

Temperature: 5.00

Astrometry.net job: 896758

RA center: 83.806 degrees

DEC center: -0.161 degrees

Pixel scale: 22.839 arcsec/pixel

Orientation: 146.753 degrees

Field radius: 19.406 degrees

Locations: Home, Arnold, MO, United States

Description

I am calling this a "test" because clouds rolled in quickly and I was only able to get 3 subs. Even the 3 that I got contained a fair amount of cloudiness - resulting in some of the halos.

The in-camera CWB for this image was not shot with a grey card. So, also as a test, I set the CWB for this stack using the Red Balance and Blue Balance factors from a different image - one that was actually shot with my 18% grey card, during a recent sunny day. That seemed to work pretty well.

I have one additional image from the 19th that I am still processing. Hope to have that one done soon.

Thanks for looking!

Version B:
I forgot to mention my theory behind the large red section of halo on the left hand side of the image (removed in version B). I believe that was a section of the lunar halo generated by the nearby first quarter moon and the rapidly increasing cloud cover. I used MultiscaleMedianTransform in PI to remove the R (residual) wavelet layer to get rid of that halo and some of the halos around the stars. Unfortunately, that also removed the valid nebulosity around the Rosette Nebula and the Flame/Horsehead Nebulae.

Comments

Author

pdarmody
Pat Darmody
License: None (All rights reserved)
1490
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Revisions

  • Orion Widefield - Test, 





    
        

            Pat Darmody
    Original
  • Final
    Orion Widefield - Test, 





    
        

            Pat Darmody
    B

Sky plot

Sky plot

Histogram

Orion Widefield - Test, 





    
        

            Pat Darmody

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