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M76
- The Little Dumbell
Planetary
Nebula in Perseus
Uploaded
11/18/06
This is my deepest
image yet of this celestial splendor, a dying star in the winter
Milkyway. Extreme care was taken to ensure correct coloration
on both the stars and nebula when the luminance was incorporated.
Description:
Composed of two parts, NGC650 & NGC651 this 12.2 magnitude
planetary nebula displays very clearly the twin hoops or ears
that are known to follow the magnetic field lines of the central
star. With a size of 170 arcseconds, it rates as one of the larger
of such objects with a 16th magnitude central star.
Processing notes:
The LRGB color correction technique was used to its fullest capacity
here, to enable the enhanced LRGB to match the G2V calibrated
RGB image as closely as possible. A screened duplicate layer
was combined with the luminance data using a mask made from the
image itself, converted to a negative. This enabled rich detail
in both the brightest and dimmest areas of nebulosity.
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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: HaRGB = 80:20:20:20 (RGB NOT Binned)
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 8/10
Outside Temperature: 35 F
CCD Temperature: -30 C
Processing Tools: Maxim DL, Gralaks Sigma, Photoshop, PixInsight, Starizona Debloomer.
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