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Contains:  NGC 281
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NGC 281 Pacman Nebula SHO Narrowband - Esprit 120 - ASI1600MM, 





    
        

            Rowland Archer
NGC 281 Pacman Nebula SHO Narrowband - Esprit 120 - ASI1600MM

NGC 281 Pacman Nebula SHO Narrowband - Esprit 120 - ASI1600MM

Technical card

Resolution: 3457x2584

Dates:Dec. 11, 2017

Frames:
Astrodon Narrowband Filters (3-5 nm) Astrodon 3nm Oiii: 48x300" (gain: 200.00) -20C bin 1x1
Astrodon Narrowband Filters (3-5 nm) Astrodon 3nm Sii: 59x300" (gain: 200.00) -20C bin 1x1
Astrodon Ha 5nm: 57x300" (gain: 200.00) -20C bin 1x1

Integration: 13.7 hours

Darks: ~30

Flats: ~30

Bias: ~200

Avg. Moon age: 23.30 days

Avg. Moon phase: 37.90%

Bortle Dark-Sky Scale: 5.00

Mean SQM: 19.70

Astrometry.net job: 2019398

RA center: 13.111 degrees

DEC center: 56.681 degrees

Pixel scale: 0.913 arcsec/pixel

Orientation: 40.282 degrees

Field radius: 0.547 degrees

Locations: Home Observatory, Wake Forest, NC, United States

Data source: Backyard

Description

Imaged the first half of last December, tossed about 20% of the subs but what was left was fairly decent data. 13.7 hours - not crazy deep, but enough that I only needed a small amount of noise reduction, MLT in the linear state and GREYCStoration final touch-up while non-linear.

Did most processing in PI, and finished with star halo reduction and local contrast enhancement (Bodoni toos) in PS.

See other revisions for a different color blend.

Comments

Author

Vassar1976
Rowland Archer
License: None (All rights reserved)
1630
Like

Revisions

  • NGC 281 Pacman Nebula SHO Narrowband - Esprit 120 - ASI1600MM, 





    
        

            Rowland Archer
    Original
  • NGC 281 Pacman Nebula SHO Narrowband - Esprit 120 - ASI1600MM, 





    
        

            Rowland Archer
    B
  • NGC 281 Pacman Nebula SHO Narrowband - Esprit 120 - ASI1600MM, 





    
        

            Rowland Archer
    C
  • NGC 281 Pacman Nebula SHO Narrowband - Esprit 120 - ASI1600MM, 





    
        

            Rowland Archer
    D
  • Final
    NGC 281 Pacman Nebula SHO Narrowband - Esprit 120 - ASI1600MM, 





    
        

            Rowland Archer
    E

B

Color profile sRGB

C

Alternate color blending: R = 50% Ha, 50% SII G = 20% Ha, 80% OIII B = OIII

D

Monochrome - extracted L channel from the "HOO" flavored blend (actually R= 50% S, 50% H; G= 80% O, 20% H; B = O)

E

Applied Bob Franke's Hubble Palette SelectiveColor changes in PS - thanks Adam Phillips on CN for the tip!

Sky plot

Sky plot

Histogram

NGC 281 Pacman Nebula SHO Narrowband - Esprit 120 - ASI1600MM, 





    
        

            Rowland Archer

In these public groups

ZWO ASI1600MM/QHY163M