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Thursday, November 1, 2018

The sky on fire, filaments of the Western cygnus

I have shot the constellation Cygnus for many years with different instruments. Due to that, I'm able to build mosaic by using some overlapping images.

This is a two frame mosaic from the Western part of the Cygnus nebula complex. Blueish hues are emission from the Cygnus Shell, a supernova remnant W63

This two panel mosaic image has a total exposure time of about 28 hours.
Each panel is shot with Celestron Edge 11" reflecting telescope (with a 0.7 focal reducer), Apogee Alta U16 cooled astrocamera and Astrodon narrowband filter set (5nm H-alpha, 3nm S-II and 3nm O-III)

The Sky on Fire
Please, click for a large image

Image is in Natural color palette from the emission of ionized elements, R=Hydrogen + Sulphur, G=Oxygen and B=Oxygen + 10% Hydrogen to compensate the missing H-beta emission.

Photo in mapped colors
Please, click for a large image

Image is in mapped colours, from the emission of ionized elements, R=Sulphur, G=Hydrogen and B=Oxygen. This mosaic image of two individual panels covers about one and half degrees of sky vertically.

H-alpha emission alone
Please, click for a large image

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