Hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  IC 1590  ·  NGC 281  ·  Sh2-184
Getting plate-solving status, please wait...
NGC 281- Pacman in Hubble, 



    
        

            Chris White
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NGC 281- Pacman in Hubble

Getting plate-solving status, please wait...
NGC 281- Pacman in Hubble, 



    
        

            Chris White
Powered byPixInsight

NGC 281- Pacman in Hubble

Acquisition details

Dates:
Oct. 7, 2017
Frames:
Astrodon Ha 1.25 5nm: 64×300(5h 20′) (gain: 139.00) -20°C
Astrodon Ha 1.25 5nm: 163×150(6h 47′ 30″) (gain: 200.00) -20°C
Astrodon OIII 1.25 3nm: 63×300(5h 15′) (gain: 139.00) -20°C
Astrodon OIII 1.25 3nm: 166×150(6h 55′) (gain: 200.00) -20°C
Astrodon SII 1.25 5nm: 61×300(5h 5′) (gain: 139.00) -20°C
Astrodon SII 1.25 5nm: 162×150(6h 45′) (gain: 200.00) -20°C
Integration:
36h 7′ 30″
Darks:
35
Avg. Moon age:
16.64 days
Avg. Moon phase:
96.08%

RA center: 00h52m41s.71

DEC center: +56°4010.1

Pixel scale: 1.297 arcsec/pixel

Orientation: 0.109 degrees

Field radius: 0.986 degrees

More info:Open 

Resolution: 4417x3220

File size: 9.0 MB

Description

I went really deep on this one to see if I could get away with very minimal stretching and no noise reduction. I ended up doing a teensy bit of NR to clean up a slight grain in the shadows, but otherwise the additional data really helped with pushing this one. I used a tip from RockstarBill on CN to help manage stars by applying Ha to the RGB stretch which tightened everything up. I also did Decon on Ha only and gently massaged the data with fairly minimal processing.

Cropped in fairly heavily as my FL was only 584mm.

C&C Welcome

Comments

Revisions

  • NGC 281- Pacman in Hubble, 



    
        

            Chris White
    Original
  • NGC 281- Pacman in Hubble, 



    
        

            Chris White
    B
  • Final
    NGC 281- Pacman in Hubble, 



    
        

            Chris White
    C

B

Description: Used a new stretch method where I combined Arcsinh with HT using Pixelmath.

Uploaded: ...

C

Description: More aggressive culling of bad data. Reduced total integration to 25 hours. Better processing of BG so I didnt have to crop in so heavily. Better noise management.

Uploaded: ...

Sky plot

Sky plot

Histogram

NGC 281- Pacman in Hubble, 



    
        

            Chris White

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