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Thursday, January 7, 2016

My first photo for the year 2016, Filaments of Cygnus

We have had few clear nights in this year. I was able to finalice a two frame mosaic project of the central Cygnus at freezing temperature of - 27 degrees centigrade (-17 fahrenheit) Lights are from three nights between 3. - 6. january 2016. Total exposure time 15h.

Opening image for the year 2016, Filaments of Cygnus
Please, click for a large image, 1800x900 pixels and 1.7 MB

A two frame mosaic of the central Cygnus area spans about two degrees of sky. Image is in mapped colors from the light emitted by an ionized elements, red=sulfur, green=hydrogen and blue=oxygen.

Orientation in Cygnus 

Area of interest is marked as a white regtangle in this older wide field image of the area.
More info about this photo can be found HERE.

Technical details

Processing work flow

Image acquisition, MaxiDL v5.07.
Stacked and calibrated in CCDStack2.
Deconvolution with a CCDStack2 Positive Constraint, 21 iterations, added at 25% weight
Color combine in PS CS3
Levels and curves in PS CS3.

Imaging optics
Celestron Edge HD 1100 @ f7 with 0,7 focal reducer for Edge HD 1100 telescope

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, 27 x 1200s =9h
O-III, 9 x 1200s binned = 3h
S-II,  9 x 1200s binned = 3h
Total 15h

A vertical composition

As many of my astronomical nature photos, this works well as horizontal or vertical composition.

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