in extreme outburst in Perseus
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 = 40:40:40 = 2h
AstroDon RGB Combine Ratio: 1: 1.05: 1.11
Location: Payson, Arizona, Elevation: 5150 ft.
Sky: Seeing FWHM = 5 arcsec (Maxim DL - 10min subframe), Transparency 9/10
Outside Temperature: 45 F
CCD Temperature: -30 C
Image Processing Tools:
Maxim DL: Calibration, deblooming (Starizona Debloomer), aligning, stacking
PixInsight: Curves, Deconvolution, noise reduction
Photoshop CS2: Curves, Color Correction, Gradient removal (Grad Xterminator), Cleanup
HOME GALAXIES EMISSION NEBS REFLECTION NEBS COMETS
GLOBULARS OPEN CLUST PLANETARIES LINKS
comet still beams strongly at 2.6 magnitude in central Perseus.
Tonight, the comets intensely yellow inner coma was easily seen
even in 11x80 binoculars, with faint hints of an outer gas halo.
This long exposure captures the deep emerald green of the cyanogen
spectrum in the outer halo, and the leaden yellow light highlighting
the core region.
is offset above the center of the central coma, with faint jets
of material seen here (look at the larger images) streaking all
across the inner region. This is probably the longest exposure
of any comet I have ever done! But the colors present are well
revealed by the extended durations.