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Contains:  Cone nebula, Christmas Tree cluster, NGC 2264, NGC 2259, The star 15Mon
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The  Fox Fur and Cone Nebulas, 





    
        

            Gary Lopez
The  Fox Fur and Cone Nebulas

The Fox Fur and Cone Nebulas

Technical card

Resolution: 2500x3750

Dates:Dec. 29, 2018Dec. 31, 2018Jan. 1, 2019

Frames:
Astrodon Ha 3nm-31mm: 203x180" (gain: 139.00) -15C bin 1x1
Astrodon OIII 3nm-31mm: 100x180" (gain: 139.00) -15C bin 1x1
Astrodon SII 3nm-31mm: 87x180" (gain: 139.00) -15C bin 1x1

Integration: 19.5 hours

Darks: ~30

Bias: ~50

Avg. Moon age: 23.92 days

Avg. Moon phase: 32.15%

Bortle Dark-Sky Scale: 5.00

Astrometry.net job: 2857670

RA center: 99.880 degrees

DEC center: 10.222 degrees

Pixel scale: 2.308 arcsec/pixel

Orientation: 206.816 degrees

Field radius: 1.445 degrees

Locations: Monterey Pines Observatory, Monterey, California, United States

Data source: Backyard

Description

The astrophotography gods always seem to even out our image-creating experiences, the good with the bad. My last image, Flaming Star Nebula, was a frustrating series of sessions to get the data and more than a week of processing in a vain attempt to develop the image I had envisioned. This image, the Fox Fur and Cone Nebulas (NGC2264), was without struggle. The data were collected in three successive sessions and upon assembling the subs, there was no need for additional processing. There was the image, just as I had envisioned.

UPDATE: This final image is a complete reprocessing of the original data. My Astrobin colleague, Alan Pham, suggested an approach that substantially improved the contrast of the image by eliminating some acquisition artifacts. He was right. The approach requires careful analysis of each channel (Ha, OIII, and SII) and filtering out non-signal glow. Thanks to Alan for his guidance.

Comments

Author

GWLopez
Gary Lopez
License: None (All rights reserved)
2673
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Revisions

  • The  Fox Fur and Cone Nebulas, 





    
        

            Gary Lopez
    Original
  • The  Fox Fur and Cone Nebulas, 





    
        

            Gary Lopez
    B
  • The  Fox Fur and Cone Nebulas, 





    
        

            Gary Lopez
    C
  • The  Fox Fur and Cone Nebulas, 





    
        

            Gary Lopez
    D
  • Final
    The  Fox Fur and Cone Nebulas, 





    
        

            Gary Lopez
    E

B

Unclipped the black a bit (thank again, Alan)

C

Cropped and warmed tint

D

Reprocessed to eliminate noise, crop, and rotate to portrait

E

Final tweak.

Sky plot

Sky plot

Histogram

The  Fox Fur and Cone Nebulas, 





    
        

            Gary Lopez