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Sunday, July 31, 2011

NGC 281, The "Pac-Man Nebula", reprocessed

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

NGC 281, in Cassiopeia
Ra 00h 52m 59.3s Dec +56° 37′ 19″

HST-palette, (HST=Hubble Space Telescope)
from the emission of ionized elements, R=Sulfur, G=Hydrogen and B=Oxygen.
Buy a photographic print from HERE

NGC 281 is an H II region in the constellation of Cassiopeia. It includes the open cluster IC 1590 and several Bok globules (dark doo-dads at center of the Blue area).  NGC 281 is also known as thePacman Nebula for its resemblance to the video game character from early 80's.
NGC281 spans over 80 light years at its estimated distance of 9500 light years.

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.
Buy a photographic print from HERE

Processing work flow: 
Image acquisition, MaxiDL v5.07. 
Stacked and calibrated in CCDStack. 
Deconvolution with a CCDSharp, 30 iterations. 
Levels, curves and color combine in PS CS3. 
Telescope, Meade LX200 GPS 12" @ f4.65 
Camera, QHY9 
Guiding, SXV-AO @ 11Hz 
Image Scale, 0,8 arcseconds/pixel 
H-alpha 6x1200s Binned 1x1 
O-III 3x600s, binned 3x3 
S-II 4x1200s, binned 3x3

Experimental 3D-studies of NGC 281

More of my 3D-studies can be seen in my portfolio:

Parallel vision stereo pair:

Cross vision Stereo pair:

An anaglyph 3D, Note, Red/Cyan eyeglasses are needed.

If you have difficulties to see any 3D-format above, here is an animated version:
(Second animation in a page)

This is a personal vision about forms and shapes, based on my 2D-images, some known facts and artistic impression.

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