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Contains:  IC 63, gamma Cas nebula, IC 59
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LBN 625 - IC 63 - Gamma Cas Nebula - HOO Narrowband - Esprit 120 - ASI1600MM, 





    
        

            Rowland Archer
LBN 625 - IC 63 - Gamma Cas Nebula - HOO Narrowband - Esprit 120 - ASI1600MM

LBN 625 - IC 63 - Gamma Cas Nebula - HOO Narrowband - Esprit 120 - ASI1600MM

Technical card

Resolution: 3091x3685

Dates:Nov. 3, 2017

Frames: 200x300"

Integration: 16.7 hours

Avg. Moon age: 13.95 days

Avg. Moon phase: 99.25%

Astrometry.net job: 1968742

RA center: 15.188 degrees

DEC center: 61.048 degrees

Pixel scale: 0.912 arcsec/pixel

Orientation: 115.632 degrees

Field radius: 0.609 degrees

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

Data source: Backyard

Description

I shot S, H and O but liked the colors from the HOO combination best.

While I'm not crazy about the finished image, I did feel good about the -process- I used to add RGB stars to my narrow band image.

The first revision is HOO with narrow band stars - mostly white.

The second revision is HOO with stars removed by Straton.

The third and final revision is HOO with RGB stars replacing the narrow band ones.

Process used:

1) PixInsight: Split HOO image into R, G and B channels in PI. Save R, G and B frames.
2) Straton: Remove stars from HOO image R, G and B frames
3) PixInsight: Process RGB (or LRGB) to create RGB image
4) PixInsight: Use NBRGB Combination script to combine RGB image with HOO R, B and B frames

There was very little nebulosity in my RGB image so I was able to just combine it without masking or reducing the nebulosity. If there was a lot of nebulosity I would probably use a star mask so in the NBRGB Combination process I was not "doubling up" on the nebula in the final image.

Comments

Author

Vassar1976
Rowland Archer
License: None (All rights reserved)
1400
Like

Revisions

  • LBN 625 - IC 63 - Gamma Cas Nebula - HOO Narrowband - Esprit 120 - ASI1600MM, 





    
        

            Rowland Archer
    Original
  • LBN 625 - IC 63 - Gamma Cas Nebula - HOO Narrowband - Esprit 120 - ASI1600MM, 





    
        

            Rowland Archer
    B
  • LBN 625 - IC 63 - Gamma Cas Nebula - HOO Narrowband - Esprit 120 - ASI1600MM, 





    
        

            Rowland Archer
    C
  • LBN 625 - IC 63 - Gamma Cas Nebula - HOO Narrowband - Esprit 120 - ASI1600MM, 





    
        

            Rowland Archer
    D
  • LBN 625 - IC 63 - Gamma Cas Nebula - HOO Narrowband - Esprit 120 - ASI1600MM, 





    
        

            Rowland Archer
    E
  • LBN 625 - IC 63 - Gamma Cas Nebula - HOO Narrowband - Esprit 120 - ASI1600MM, 





    
        

            Rowland Archer
    F
  • Final
    LBN 625 - IC 63 - Gamma Cas Nebula - HOO Narrowband - Esprit 120 - ASI1600MM, 





    
        

            Rowland Archer
    G

B

Here's the same image with stars removed by Straton.

C

And the final image with RGB stars replacing the more or less colorless HOO ones.

D

Here's the image, with RGB stars replacing the more or less colorless HOO ones. Process used: 1) PixInsight: Split HOO image into R, G and B channels in PI. Save R, G and B frames. 2) Straton: Remove stars from HOO image R, G and B frames 3) PixInsight: Process RGB (or LRGB) to create RGB image 4) PixInsight: Use NBRGB Combination script to combine RGB image with HOO R, B and B frames There was very little nebulosity in my RGB image so I was able to just combine it without masking or reducing the nebulosity. If there was a lot of nebulosity I would probably use a star mask so in the NBRGB Combination process I was not "doubling up" on the nebula in the final image.

E

Used Bodoni's tools in PhotoShop to increase star color

F

Used Bodoni's tools in PhotoShop to increase star color

G

Used the "Landscape Pop" filter in the free version of ON1 to bring the stars out a bit more.

Sky plot

Sky plot

Histogram

LBN 625 - IC 63 - Gamma Cas Nebula - HOO Narrowband - Esprit 120 - ASI1600MM, 





    
        

            Rowland Archer

In these public groups

ZWO ASI1600MM/QHY163M