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Getting plate-solving status, please wait...
Double Cluster in Perseus meets Heart & Soul Nebula, 



    
        

            Steve Ludwig
Powered byPixInsight

Double Cluster in Perseus meets Heart & Soul Nebula

Getting plate-solving status, please wait...
Double Cluster in Perseus meets Heart & Soul Nebula, 



    
        

            Steve Ludwig
Powered byPixInsight

Double Cluster in Perseus meets Heart & Soul Nebula

Equipment

Acquisition details

Dates:
Dec. 22, 2019
Frames:
77×120(2h 34′)
Integration:
2h 34′
Avg. Moon age:
25.67 days
Avg. Moon phase:
15.93%

RA center: 02h37m02s.65

DEC center: +59°3907.6

Pixel scale: 6.219 arcsec/pixel

Orientation: 100.583 degrees

Field radius: 6.197 degrees

More info:Open 

Resolution: 5990x3990

File size: 8.3 MB

Data source: Backyard

Description

Equipment

- Nikon D3300 (unmodified)

- Samyang 135mm f2 @ f2

- Skywatcher Star Adventurer Pro Pack

- no-name tripod

Acquisition

- 77 lights x 120 s = 2 h 34 min total exposure time

- no dark, flat, bias frames

- no filters

- ISO 200

- Bortle 4 zone

Processing

-> lights stacked in DSS

-> median kappa sigma clipping method

-> unmodified TIF opened in PixInsight

-> STF stretch

-> dynamic crop

-> dynamic background extraction

-> background neutralization

-> color calibration

-> use of starnet++ to separate background from stars

background

-> local histogram equalization to increase background contrast

-> SCNR green to remove green color and to improve color noise

-> red channel extraction

-> range selection to create a mask containing the heart and soul nebula

-> curves transformation to increase saturation of heart and soul nebula

-> mask inversion

-> curves transformation to reduce saturation of remaining background (color noise reduction/removal)

-> ACDNR to reduce noise

stars

-> SCNR green to remove green color

-> invert image

-> SCNR green to remove purple (now green) star fringes

-> invert image

-> curves transformation to increase saturation

-> pixel math to recombine stars and background

-> final histogram/curves transformation

-> saved as jpg

Comments

Revisions

  • Double Cluster in Perseus meets Heart & Soul Nebula, 



    
        

            Steve Ludwig
    Original
  • Final
    Double Cluster in Perseus meets Heart & Soul Nebula, 



    
        

            Steve Ludwig
    B

B

Description: In the new revision I removed purple star fringes, removed most of the color noise in the background and revealed a bit more of the background dust.

Uploaded: ...

Sky plot

Sky plot

Histogram

Double Cluster in Perseus meets Heart & Soul Nebula, 



    
        

            Steve Ludwig