Horsehead
Nebula
Dark
Nebula in Orion
Uploaded
2/7/11
This
new image, after nearly a decade of having not imaged this object
with the 12 inch is probably the best Ill get with this instrument
with reasonable exposure times. The blue glow of Zeta Orionis
can be seen just out of the field to the left, making it very
challenging to get a deep shot of this nebula. I was surprised
at how many galaxies were present in this image behind the red
curtain of IC434, the emission nebula behind the horse. While
none of them were plotted in Megastar, they seem to be fainter
than 17th magnitude at best. The very cyan colored NGC2023 can
be seen on the lower left corner of this frame. |
Instrument: 12.5" f/5 Home made Newtonian
Mount: Astrophysics 1200 QMD
CCD Camera: SBIG 10XME NABG with Enhanced Water Cooling
Guider: Meade DSI Pro w/Lumicon Newt Easy Guider
Exposure: LRGB = 180:30:30:30
AstroDon RGB Combine Ratio: 1: 1.05: 1.2
Location: Payson, Arizona, Elevation: 5150 ft.
Sky: Seeing FWHM = 5 arcsec (Maxim DL - 10min subframe), Transparency 9/10
Outside Temperature: 35 F
CCD Temperature: -30 C
Image Processing Tools:
Maxim DL: Calibration, deblooming (Starizona Debloomer), aligning, stacking
PixInsight: Curves, Deconvolution
Photoshop CS2: Curves, Color Correction, Gradient removal (Grad Xterminator), Cleanup
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