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Sharpless
2-235 & PK173+2.1
Emission
and Planetary Nebulas in Auriga
Uploaded
12/31/05
This
small but highly detailed emission nebula is part of a quartet
of Sharpless nebulosities within a few degrees of sky inside
the pentagon of Auriga. Central to this image is the main section
of nebulosity which is surrounded by a dimly glowing cloud of
hydrogen. Inside it are spectacular viens of dark tendrils of
dust giving the entire nebula a mottled texture. On the upper
left, the glow represents part of Sharpless 232, a huge object
spanning several degrees and banded in appearence. Along the
right edge is Sharpless 2-231 a glowing region of hydrogen. Near
the bottom center, the "detached" piece of nebulosity
was a bonus - a faint PK planetary nearly half an arcminute in
size. This
planetery has a more orange appearance than the ruddy nebula.
Finally you can see in this image a small reflection nebula to
the lower left edge of the main nebula. |
Instrument: 12.5" f/5 Home made Newtonian
Platform: Astrophysics 1200 QMD
CCD Camera: SBIG 10XME NABG with Enhanced Water Cooling
Guider: SBIG ST4
Exposure: Ha+LRGB = 120:20:20:20 (RGB Binned 2x2)
RGB Combine Ratio: 1: 1.05: 1.11
Filters: AstroDon RGB Tricolor
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
Processing Tools: Maxim DL, Gralaks Sigma, Photoshop, PixInsight, CCDOps Debloomer.
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