Comet Holmes

Comet in extreme outburst in Perseus

Uploaded 11/10/07

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This comet continues to evolve in ways no one expected. On this night of November 8th, the comets head was so huge it required several test shots to ensure I was not cutting off the comets leading edge of its inner coma. Here in this image, several rays can be seen in the inner coma, and a large clumpy region leading the nucleus. The comets biggest surprise is its extremely yellow coloration, seen in this G2V calibrated image as a "leaden yellow" coloration. An interesting bow shock structure appears on the comets leading edge, with multiple edges as well.
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


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