Celestial hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  Extremely wide field
Cygnus (Astrotracer), AlenK
Cygnus (Astrotracer)
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Cygnus (Astrotracer)

Cygnus (Astrotracer), AlenK
Cygnus (Astrotracer)
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Cygnus (Astrotracer)

Equipment

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Acquisition details

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Description

Tracking was done internally with the camera's Astrotracer feature, with the camera mounted directly to a tripod. This stack includes stops ranging from f/2.5 to f/4, with the majority being at f/2.8, just to test the lens quality at various f stops. Corner stars were good already at f/2.5 and almost perfect at f/2.8: No need to go down to f/4, in my opinion. But maybe my standards for that are not as high as other people. No darks, bias or flats were used.

Comments

Revisions

  • Cygnus (Astrotracer), AlenK
    Original
  • Final
    Cygnus (Astrotracer), AlenK
    B

B

Description: Upgrade to quarter resolution (6Mpixel) from "2K" width (~2Mpixel).

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Sky plot

Sky plot

Histogram

Cygnus (Astrotracer), AlenK