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Kohoutek 2-2, 


Kohoutek 2-2

Kohoutek 2-2

Technical card

Resolution: 2007x1305

Dates:Feb. 2, 2019Feb. 11, 2019Feb. 21, 2019Feb. 22, 2019Feb. 24, 2019Feb. 26, 2019Feb. 27, 2019March 10, 2019

Astrodon Ha 1.25 3nm: 32x900" -25C bin 2x2
Astrodon O3 1.25 3nm: 32x900" -25C bin 2x2

Integration: 16.0 hours

Avg. Moon age: 17.16 days

Avg. Moon phase: 49.72% job: 2646826

RA center: 103.092 degrees

DEC center: 9.966 degrees

Pixel scale: 0.669 arcsec/pixel

Orientation: 358.162 degrees

Field radius: 0.223 degrees

Data source: Backyard


Also known as PK 204.1+4.7, Kohoutek 2-2 is a large, faint planetary nebula in the constellation of Monoceros. It is probably an old planetary nebula and appears embedded within a complex of even fainter nebulosity. Whether this is part of the original star’s red giant envelope or is something unrelated is unknown to me.

According to The Simbad database, the planetary nebula has a diameter of 6.9’ and a distance of 2816 light years. There doesn’t appear to be much more information than that available about this particular planetary nebula.

After stacking the subs in PixInsight I then separated the stars and nebula and processed them separately, before recombining to get the final colour image. I would have liked to replace the NB stars with RGB stars but ran out of time. For both stars and nebula the red channel is 100% Ha, the green channel is 50% Ha, 50% O3 and the blue channel is 100% O3.



License: None (All rights reserved)

Sky plot

Sky plot


Kohoutek 2-2,