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Tuesday, November 14, 2017

An other detail from the Southern Cygnus


This has been the most cloudy Autumn season in twenty years.
I'm still processing material from couple of clear nights we had this Autumn. I made another individual image out of the material, I shot for the WR 134 mosaic image.


An other nameless detail from the Southern Cygnus
Please, click for a full size photo

Image is in mapped colours, from the emission of ionized elements, R=Sulphur, G=Hydrogen and B=Oxygen.


Image in visual spectrum
Please, click for a full size photo

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.


The mosaic image
Please, click for a full size photo


The area of interest can be seen at bottom left.


The location in Cygnus
Please, click for a full size photo


The area of the mosaic image above is marked as a white rectangle.
Info about this large mosaic image can be seen HERE


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 x 2 and SXV-AOL

Astrodon filter, 5nm H-alpha
Astrodon filter, 3nm O-III
Astrodon filter, 3nm S-II

Exposure times

H-alpha, 21 x 1200s, binned 2x2 = 7h
O-III, 6 x 1200s binned 4x4 = 2h 
S-II,  6 x 1200s binned 4x4 = 2h 
Total 11h


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