Saturday, December 18, 2010
Sh2-234 aka IC 417, start of the new project.
Sh2-234, IC417, sometimes called as "Spider Nebula", in constellation Auriga. H-alpha 15x1200s.
Distance is about 10.000 light years. Image is about 30' wide and covers about 100 light years.
Ra 05 hr 28 min 05.9 sec , Dec +34 hr 25 min26 sec
This is not too commonly imaged target due the lowish surface brightness and the proximity of two eye catchers, IC 405 and IC 410. Sh2-234, contains a young open star cluster that ionizing the surrounding gas.
I will shoot more lights for this object later, including O-III and S-II data.
I will shoot more lights for this object later, including O-III and S-II data.
HST-palette, (HST=Hubble Space Telescope)
from the emission of ionized elements, R=Sulfur, G=Hydrogen and B=Oxygen.
Color data is taken from my older, wide field image.
Area of interest is marked with a Red rectangle.
Imaging data of this wide field image can be seen here:
Technical details:
Processing work flow:
Image acquisition, MaxiDL v5.07.
Stacked and calibrated in CCDStack.
Deconvolution with a CCDSharp, 30 iterations, 50% mix..
Levels, curves and color combine in PS CS3.
Telescope, Meade LX200 GPS 12" @ f5
Camera, QHY9 Guiding, SXV-AO @ 4,5Hz
Image Scale, 0,75 arcseconds/pixel
Baader H-alpha 7nm 15x1200s, binned 2x2
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