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M13 -- Accidental Monochrome Image

Technical card

Resolution: 1304x976

Dates: Aug. 11, 2017

Frames: 20x45"

Integration: 0.2 hours

Avg. Moon age: 17.94 days

Avg. Moon phase: 89.05% job: 1765587

RA center: 250.431 degrees

DEC center: 36.463 degrees

Pixel scale: 1.604 arcsec/pixel

Orientation: 268.285 degrees

Field radius: 0.363 degrees

Locations: Home, Katy, TX, United States


Messier 13 (M13), also designated NGC 6205 and sometimes called the Great Globular Cluster in Hercules or the Hercules Globular Cluster, is a globular cluster of about 300,000 stars in the constellation of Hercules. It is about 145 light-years in diameter, and it is composed of several hundred thousand stars, the brightest of which is a red giant, the variable star V11, with an apparent visual magnitude of 11.95. M13 is 22,200 light-years away from Earth.

I'm starting with astrophography and was trying to capture a color shot, but I confused myself with the correct setting for the camera in INDI. I thought I'd go ahead and post it.

Processing was performed with PixInsight 1.8.5 using BPP, ABE, MaskedStrech and Histogram Transformation.



Richard Beck



Actually, this was a color image. I missed specifying the debayer pattern in BPP. Here's the color version.


Reprocessed -- ABE, PCC, SCNR (Green 0.5) and ArcSinh stretch

Sky plot

Sky plot


M13  -- Accidental Monochrome Image, Richard Beck

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