Monday, October 10, 2016
A little different view to the North America nebula, NGC 7000
I have planned to shoot this area of the North America Nebula for years. NGC 7000 is very well known and much imaged area of the sky. I always trying to find new visual aspects from the popular objects. Nebula itself is relatively bright, only five hours of exposures was needed for a good signal.
A detail from the North America nebula
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An experimental starless view reveals details in the actual nebula
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Image in visual spectrum
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Image is in Natural colour palette from the emission of ionized elements,
R=Hydrogen + Sulphur, G=Oxygen and B=Oxygen + ~10% Hydrogen.
Orientation
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Area of interest is marked as a white rectangle
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Technical details
Processing work flow
Image acquisition, MaxiDL v5.07.
Stacked and calibrated in CCDStack2.
Deconvolution with a CCDStack2 Positive Constraint, 33 iterations, added at 50% weight
Color combine in PS CS3
Levels and curves in PS CS3.
Imaging optics
Celestron Edge HD 1100 @ f10 with 0,7 focal reducer for Edge HD 1100 telescope
Mount
10-micron 1000
Cameras and filters
Imaging camera Apogee Alta U16 and Apogee seven slot filter wheel
Guider camera, Lodestar x2 and SXV-AOL
Astrodon filter, 5nm H-alpha
Astrodon filter, 3nm O-III
Astrodon filter, 3nm S-II
Exposure times
H-alpha, 9x 1200s = 3h
O-III, 3 x 1200s binned 2x2 = 1h
S-II, 3 x 1200s binned 2x2 = 1h
Total 5h
H-alpha emission
S-II emission
O-III emission
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