Friday, December 10, 2010
Start of the new project, IC 405 closeup
IC 405, Sh2-229 or Caldwell 31 also known as the "Flaming Star Nebula".
RA 05h 16.2m dec +34° 28′
Image is in HST-palette, (HST=Hubble Space Telescope)
from the emission of ionized elements, R=Sulfur, G=Hydrogen and B=Oxygen.
IC 405 locates in constellation Auriga and it's an emission/reflection nebula. Refelction component can't be seen in my image, since I'm shooting only narrowband data and reflection part is broadband target.
Distance from Oulu, Finland, is about 1500 light years. Nebula is about 5 light years across.
Colors are borrowed from this older image. I'll shoot better color channels and more H-alpha light,
when ever weather allow me to do so.
Natural color composition from the emission of ionized elements, R=80%Hydrogen+20%Sulfur, G=100%Oxygen and B=85%Oxygen+15%Hydrogen to compensate otherwise missing H-beta emission. This composition is very close to a visual spectrum.
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 8x1200s, binned 2x2
Older wide field version of IC 405 from 2008
Tokina AT 300mm @ f2.8, QHY8 camera. Image is in HST-palette.
Technical details in Blog post:
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