LtE in CMO #259

From   Edward Arnold GRAFTON


 

@ . . . . . . . . . .Subject: Jupiter Observation March 28th 2002 01:22 UT

 

 Hi Jupiter Observers.

 

Here is an observation from Houston Texas  March 28th 2002 01:22 UT.

 

Presented are three images. The color composite is made from 29 unfiltered images and 5 each rgbs. The middle image is made from the best three from the 29 data set and the right image is made from the best single image. The color image seems to show the SSTB ovals as an elongated unit. However the 3 image composite and the single image seem to show that the ovals may yet still have some distinct characteristics. The assumption is that the color composite from 29 images is of lower resolution (as the seeing was only 5/10) since many marginal images were used to improve the S/N. More high resolution images are needed. Also note the interesting detail in the northern latitudes.

 

 The sky was hazy with cirrus clouds, transparency fair 4/10, and seeing was average, 5/10, with a 5 mph E. wind. No dew was present. The weather was mild with the temperature about 70 F.

Jupiter image :

 

 http://www.ghgcorp.com/egrafton/03-28-02.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:

 

     5 BLUE  + IR rejection, .3  seconds, SBIG filter

     5 GREEN + IR rejection, .3  seconds, SBIG filter

     5 RED    + IR rejection, .3  seconds, SBIG filter

     ~29 clear filter, No IR .12 seconds, SBIG filter

                             (28 March 2002 email)  


 Ed GRAFTON (Houston, Texas, USA)

egrafton@ghgcorp.com


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