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Campbell's Hydrogen Star. PK64+5.1a small Pn in Cygnus RGB and HaR GB, 




    

        Pat Rodgers
Campbell's Hydrogen Star. PK64+5.1a small Pn in Cygnus RGB and HaR GB

Campbell's Hydrogen Star. PK64+5.1a small Pn in Cygnus RGB and HaR GB

Technical card

Resolution: 1315x997

Dates: July 28, 2018

Frames:
Baader B 1.25'' CCD Filter: 6x180" -13C bin 1x1
Baader G 1.25'' CCD Filter: 6x180" -13C bin 1x1
Baader Ha 1.25" 7nm: 6x300" -13C bin 1x1
Baader R 1.25'' CCD Filter: 6x180" -13C bin 1x1

Integration: 1.4 hours

Darks: ~39

Flats: ~31

Bias: ~149

Avg. Moon age: 15.35 days

Avg. Moon phase: 99.61%

Bortle Dark-Sky Scale: 6.00

Temperature: 14.00

Astrometry.net job: 2171863

RA center: 293.688 degrees

DEC center: 30.516 degrees

Pixel scale: 1.327 arcsec/pixel

Orientation: 285.204 degrees

Field radius: 0.304 degrees

Locations: Un-stable Observatory, back garden., Huddersfield, West Yorkshire, United Kingdom

Data source: Backyard

Description

This is an unusual Planetary nebula indeed. It's been described as a proto planetary nebula? The WR star HD 184738 has very strong Hydrogen and nitrogen emissions but the green oxygen is missing.
As can be seen in both the RGB and the Ha enhanced RGB images it has this beautiful ruby red hue.
There are two other very red stars in this fov. A tiny star at around half past one to the right of Campbell's star, and another further out at around three thirty.
I've not used any colour manipulation other than the photometric colour balancing tool in PI.

Comments

Author

Pat_Rodgers
Pat Rodgers
License: None (All rights reserved)
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Revisions

  • Campbell's Hydrogen Star. PK64+5.1a small Pn in Cygnus RGB and HaR GB, 




    

        Pat Rodgers
    Original
  • Final
    Campbell's Hydrogen Star. PK64+5.1a small Pn in Cygnus RGB and HaR GB, 




    

        Pat Rodgers
    B

B

The Ha enhanced HaR GB. I forgot to mention in the summary this lies within Sh2-91 an old supernova remnant.

Sky plot

Sky plot

Histogram

Campbell's Hydrogen Star. PK64+5.1a small Pn in Cygnus RGB and HaR GB, 




    

        Pat Rodgers

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Fast Newtonians
UK Astro-Imaging