Comet Tuttle /8p

Brightening Comet in Draco

Uploaded 12/3/07

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Now at mag 8.5 and rapidly growing brighter each day, this periodic comet will offer challenges to astroimagers because of its fast speed against the starry background. Here, we essentially guided on the comets nucleus, and let the stars streak on by, revealing some 52 minutes of movement. At this time visually, the comet was very low surface brightness, however it should become naked eye in a few months.

The comet was only 10 degrees from the pole star on this date, but will be rapidly moving southward from here on. I was surprised to see such coloration in this still distant visitor, however this may be a good sign of things to come!

Instrument: 12.5" f/5 Home made Newtonian Mount: Astrophysics 1200 QMD CCD Camera: SBIG 10XME NABG with Enhanced Water Cooling Guider: DSI w/Lumicon Newt Easy Guider Exposure: LRGB = 52:7:7:7 (RGB Binned 2x2) AstroDon RGB Combine Ratio: 1: 1.05: 1.11 Location: Payson, Arizona, Elevation: 5150 ft. Sky: Seeing FWHM = 6 arcsec (Maxim DL - 10min subframe), Transparency 8/10 Outside Temperature: 35 F CCD Temperature: -30 C Image Processing Tools: Maxim DL: Calibration 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