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Gallery: Tempel 1 (2004-2005)

Observation made by Jim Thommes

Fig 1:

Image Parameter Details
Comments: This posted image is about the middle frame of a 18 image sequence. The full sequence is accessible at the following URL. Beware, it is about 6 Megabytes. It can be accessed here:
These images were taken in 3 minute intervals (3x50 second stacks) between 5:46 UT 4 Jul and 6:44 UT 4 Jul. During this time I had observed the peak reading for the comet starting at about 980 and peaking at about 2800 on the Artemis285 camera (Used the focus aid to get these readings). These images are of course stretched a bit for visual purposes, but I did try to calibrate all the frames to a constant peak for the star GSC 5546:1406 (the star between the two brighter stars upper left of the comet). This calibration was the best I could do to keep the visualization constant. Part of the difficulty is that at the end of the sequence, I was shooting very low to the horizon and that tended to interfere with some haze and star bloating.
Image Date/Time: 2005-07-04/5:46-6:44 UT sequence
Observing Site: Dos Picos Park, Ramona CA 116 56 16 West, 32 59 57 North
San Diego, CA
Weather: Clear - 15C
Telescope: Celestron C8 at f/5.3 (Equiv FL 1083 mm) GEM mounted
Camera: Artemis285 (Sony ICX285) 16 bit 6.45 micron sq pixels 1392x1040
Exposure: 18 images of 3x50 second stack
Filters: IR/UV Block visual bandpass (Baader IR/UV Block)

Table 1: Data about image.

Updated: 30-Jul-2013