Comet Linear WM1

April 13, 2002

Uploaded 4/14/02

This 9.5 magnitude object is located currently in the constellation of Aquilla, low in the eastern morning sky before sunup. Currently sporting a broad fan tail, this fast moving object was imaged above by taking consecutive 1 minute exposures in a repeating RGB sequence, and registering the comets nucleus for the final image. The effect is we are guiding on a moving comet, and the star are streaking by. This is necessary to get a deeper image of the comet itself. A slight greenish hue is seen on the leading edge of the coma. The preponderance of "orange" stars is an illusion. The red and green channel images are blending to form an orange color on what would be a white star in a normal registered image.

Instrument:  12.5" f/5 Home made Newtonian
Platform:  Astrophysics 1200 QMD
CCD Camera:  SBIG ST7E w/Enhanced Cooling
Exposure:  RGB = 60:20:20:36 (RGB Binned 2x2 and upsampled)
Filters:  RGB Tricolor
Location:  Payson, Arizona
Elevation:  5150 ft.
Sky:  Seeing FMHW = 3 arcsec, Transparency 8/10
Outside Temperature:  10 C
CCD Temperature:  -25 C
Processing:  Maxim DL, Photoshop, AIP4WIN, PW Pro.




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