Zlender Images of Comet Hale-Bopp

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Observer: Udo Zlender
Location: Bonn, Germany
Date: March 9, 1997 04:32:59-04:39:28 UT

This set of three ccd-images shows the region of the inner coma at different exposure times.

For all images:

Camera: OES-LCCD14 2x2 pixel binning mode , 12 bits AD-resolution
Telescope: 1760mm F/6.3 Celestron C11 with focal reducer
Tracking: automatic on Losmandy G11
Outside temp: 3 deg Celsius
Filter: None
CCD-temp: -4 deg Celsius
Orientation: North is up
Humidity: high
Notes: Urban environment.
       There were high thin clouds during exposure.

First image: 
Time of observation: 04:39:28 UT
Exp. time: 0.3 sec 
Processing: dark subtracted, log scaled

Second image:
Time of observation: 04:36:47 UT
Exp. time: 30.0 sec 
Processing: dark subtracted, log scaled, false color lut

Third image:
Time of observation: 04:32:59 UT
Exp. time: 1.0 sec 
Processing: dark subtracted, log scaled

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