Added 4 hours of narrowband data to the 8 hours from last year.
With clouds rolling in was not able to get RGB data for the stars, so here is the HOO image
Here is last years effort, besides adding data, this year I completely redid the processing in PI,
and BlurX, NoiseX, StarX, GHS, pixelmath to create the HOO image, curves and advsharpening
https://www.astrobin.com/v4hsg8/D/Hope you enjoy.
CS
Pete
The Medusa Nebula is a planetary nebula in the constellation of Gemini.
It is also known as Abell 21 and Sharpless 2-274.
It was originally discovered in 1955 by University of California, Los Angeles astronomer George O. Abell,
who classified it as an old planetary nebula.
Until the early 1970s, the nebula was thought to be a supernova remnant. (wikipedia)
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