Wednesday, November 30, 2016
A detail photo of the dark filaments in Pelican nebula
I have shot lights for this image back in October 5 but found time to process them just now.
The complex cloud of dust and gas locates in front of the ionized gas clouds. Ionized gas, mainly oxygen in this photo, is emitting light and due to that we are able to see the dark formation,
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An experimental starless version
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Orientation
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Area of interest is marked as a white rectangle
This wide field photo of the North America and Pelican Nebulae was shot with Canon EF 200 mm f1.8 camera lens, QHY9 astrocam and Baader narrowband filters.
This wide field photo of the North America and Pelican Nebulae was shot with Canon EF 200 mm f1.8 camera lens, QHY9 astrocam and Baader narrowband filters.
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 for all three panels
H-alpha, 6 x 1200 s = 2 h
S-II, 6 x 1200 s binned 2x2 = 2 h
O-III information is taken from an older the wide field shot seen above, ~2 h
O-III information is taken from an older the wide field shot seen above, ~2 h
Total 6 h
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