> From egrafton@ghg.net Mon Dec 16 23:52 MST 2002
Date: Tue, 17 Dec 2002 00:51:31 -0600 (CST)
From: egrafton@ghg.net (Ed Grafton)
Subject: Jupiter Observation 12-15-02 09:44 UT


Hi Jupiter Observers


Here is an observation from Houston Texas December 15th 2002 at 09:44 UT.
The two shadows that seem to be slipping off the globe are Callisto and Io.
Io can be seen near the CM in the EZ and shows some phase angle. The NTB,
which Damian Peach pointed out has faded, seems to be composed of three
tenous strands. The sky was partly cloudy with intervals of clear sky
lasting serval minutes. The transparency was excellent between the clouds
and ranged from 0-9/10, and seeing was very good, 8/10 with no wind.
Moderate dew was present. The weather was cool with the temperatures in the
upper 50s F around local midnight. 


Jupiter image: http://www.ghg.net/egrafton/j12-15.jpg


        Ed Grafton, Houston Texas, ST5C CCD and a 14 inch f/11 Celestron SCT

        Barlow Projection to f/27 aprox .21 arc seconds per pixel.

        Image data:   

                10 BLUE  + IR rejection, .3  seconds, SBIG filter
                10 GREEN + IR rejection, .3  seconds, SBIG filter
                10 RED	+ IR rejection,  .3  seconds, SBIG filter
                ~50 clear filter, No IR  .11  seconds,  SBIG filter

 
               
                                                        Ed Grafton

 
             
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