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Tuesday, February 1, 2011

Sh2-142, the "Wizard Nebula", wide field & a closeup reprocessed




Since my processing technique gets better and weather doesn't give any support, I have reprocessed some older images. There is now star colors added and other processing is tweaked too.

Sh2-142, the "Wizard"
Ra 22h 47.0Dec 58° 06′



Image is in HST-palette, (HST=Hubble Space Telescope)
from the emission of ionized elements, R=Sulfur, G=Hydrogen and B=Oxygen.
Star colors are mixed from the NB channels, Red=H-a, G=O-III and B= 85%O-III + 15%H-a.

NGC 7380 is an open cluster inside the nebula. The "Wizard Nebula" is also known as a Sharpless catalog number 142. (Sh2-142) The nebula is relatively large object located in constellation Cepheus about 7000 light years away.

Natural color composition from the emission of ionized elements, R=80%Hydrogen+20%Sulfur, G=100%Oxygen and B=85%Oxygen+15%Hydrogen to compensate otherwise missing H-beta emission. This composition is very close to a visual spectrum.

Image is shot with a QHY8 and the Tokina AT 300mm f2.8 lens at full aperture.
Original versions from November 2008, with technical details:




Sh2-142, the "Wizard" a closeup

Image is in HST-palette, (HST=Hubble Space Telescope)
from the emission of ionized elements, R=Sulfur, G=Hydrogen and B=Oxygen.
Star colors are mixed from the NB channels, Red=H-a, G=O-III and B= 85%O-III + 15%H-a.

This is a newer closeup image of the actual nebula. It covers about 30 arc minutes horizontally. 
Original processing from September 2010 and technical details can be found here:


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