17P/Holmes 2007-Dec-02 Jim Melka

Used Images Plus 2.80 to find best focus. Then used the Canon timer-counter-controller device to sequentially record ninety 45-sec frames with the Canon 20d set at ISO 800 with 85mm f/1.8lens coupled to Tamron 2X teleconverter resulting in an f/3.2 system. Field of view is 8 X 5.5 degrees. Mirfak is the bright mag. 1.78 star near the bottom right corner and 4th mag. Iota Persei is left of comet. Used IP 2.80 to register 88 usable frames by translation and rotation - I forgot to tighten the declination axis on the tracking Orion EQ1 GEM. Used GradXterminator S/W to remove amplifier noise on the right edge of the combined frame. Best regards, Jim Melka