Tuesday, December 27, 2016
Bright nebulae of the central Cygnus
I had about six hours of clear sky at night between 23.- 24.12. That was just enough to shoot this relatively bright emission area in constellation Cygnus.
Bright nebulae of Cygnus
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The photo is in mapped colors from the light emitted by an ionized elements,
red=sulfur, green=hydrogen and blue=oxygen.
An experimental starless view
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Mosaic
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Older image. with technical details, can be found HERE
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Orientation
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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, 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
Canon EF 200mm f1.8 camera optics (For S-II and O-III channels)
Mount
10-micron 1000
Meade LX200 GPS 12" (For S-II and O-III channels)
Cameras and filters
Imaging camera Apogee Alta U16 and Apogee seven slot filter wheel
Guider camera, Lodestar x2 and SXV-AOL
QHY9 (For S-II and O-III channels)
QHY9 (For S-II and O-III channels)
Astrodon filter, 5 nm H-alpha
Baader filter, 8,5 nm O-III
Baader filter, 8 nm S-II
Exposure times
H-alpha, 9 x 1200 s binned 2x2
O-III, 4 x 1200 s binned 4x4 =
S-II, 4 x 1200 s binned 4x4 =
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