Hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  50 alf Cyg  ·  55 Cyg  ·  56 Cyg  ·  57 Cyg  ·  58 nu. Cyg  ·  59 f01 Cyg  ·  60 Cyg  ·  62 ksi Cyg  ·  63 f02 Cyg  ·  B347  ·  B348  ·  B349  ·  B350  ·  B351  ·  B352  ·  B353  ·  B355  ·  B356  ·  B358  ·  Cygnus  ·  Deneb  ·  IC 5068  ·  IC 5070  ·  IC 5076  ·  NGC 6991  ·  NGC 6996  ·  NGC 6997  ·  NGC 7000  ·  NGC 7026  ·  NGC 7039  ·  And 23 more.
Getting plate-solving status, please wait...
NGC 7000 - North America Nebula, 



    
        

            Steve Ludwig
Powered byPixInsight

NGC 7000 - North America Nebula

Getting plate-solving status, please wait...
NGC 7000 - North America Nebula, 



    
        

            Steve Ludwig
Powered byPixInsight

NGC 7000 - North America Nebula

Equipment

Acquisition details

Dates:
May 28, 2020
Frames:
108×120(3h 36′)
Integration:
3h 36′
Avg. Moon age:
5.67 days
Avg. Moon phase:
32.16%

RA center: 20h50m25s.0

DEC center: +43°3426

Pixel scale: 12.444 arcsec/pixel

Orientation: -67.815 degrees

Field radius: 5.922 degrees

More info:Open 

Resolution: 2934x1775

File size: 4.2 MB

Data source: Backyard

Description

Equipment

- Nikon D3300 (unmodified)

- Samyang 135mm f2 @ f2

- Skywatcher Star Adventurer Pro Pack

- no-name tripod

Acquisition

- 108 lights x 120 s = 3 h 36 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 background extraction

-> background neutralization

-> color calibration

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

-> individual histogram/curves transformation & SCNR (green) for stars and background

-> pixel math to recombine both images

-> ACDNR

-> dynamic crop

-> histogram/curves transformation -> saved as jpg

Comments

Revisions

  • NGC 7000 - North America Nebula, 



    
        

            Steve Ludwig
    Original
  • Final
    NGC 7000 - North America Nebula, 



    
        

            Steve Ludwig
    D

D

Description: For the new revision I added the following processing steps:
1.) Separation of stars and background with Starnet++ module.
2.) Local histogram equalization on background to enhance contrast.
3.) Curves transformation to increase saturation.
4.) Resample 50% to remove noise and artifacts in bright star halos.
5.) Dynamic crop to remove artifacts at the right edge of the image (introduced by LHE process). ---


I think the changes bring out some further details in the nebulosity and the color looks a bit more vivid without being too extreme. If you like, please let me know what you think about it.

Uploaded: ...

Sky plot

Sky plot

Histogram

NGC 7000 - North America Nebula, 



    
        

            Steve Ludwig