Thursday, October 25, 2018
This new photos shows the LBN 251 and companions in Cygnus
My latest photo show a busy area in Cygnus, there are not too many photos out of this area alone.
My large mosaic image of cygnus shows this object group as pow tie shaped formation.
Bow Tie of LBN 251, LBN 239 and the IC 1311
Click for a large photo
H-alpha emission only
Click for a large photo
Closeup of LBN 239
Click for a large photo
Orientation in the large context
Click for a large photo
Technical details
Processing workflow
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 filters,
5nm H-alpha 3nm S-II and 3nm O-III
5nm H-alpha 3nm S-II and 3nm O-III
Exposure times for both panels together
H-alpha, 18 x 1200 s, binned 2x2 = 6 h
O-III, 9 x 1200 s, binned 4x4 = 3 h.
S-II, 9 x 1200 s. binned 4x4 = 3 h
Total 12 h.
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