NGC2371
Planetary Nebula in Gemini
Uploaded 1/27/17
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very dim planetary in Gemini is a unique turquoise color, and
has not only a nice central star, but "wings" on the
sides. Listed at 13.0 magnitude, the object is a big 55"
across. Here, I was testing my new 9 point flotation mirror cell
for the 12.5" which was just completed to hopefully fix
the badly distorted stars I was getting with my old mirror mount.
It worked! Stars are now round and crisp - at least as far as
the bad seeing tonight would allow. The last few frames I watched
in horror as a monster cloud approached, and was just able to
finish an hour exposure on this object before the sky went away. |
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Full Frame view, with the planetary
in the center.
Select an image size for a larger view:
1290 x 960
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Here with a few labels. Ive circled
in red the galaxies plotted in Cartes
du Ciel which goes to 20th mag, and the
green circles are additional objects that
are fainter.
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1290 x 960
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2x zoom on center of full frame
to show details in ansae.
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1290 x 960
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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: RGB = 20:20:20
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: -20 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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