LtE in CMO #258

From   Edward Arnold GRAFTON

 

@. . . . . . . Subject: Jupiter Observation Feb. 25th 2002 at 01:00, 01:11, 01:31 UT

 

Hi Jupiter Observers,

 Here is an observation from Feb. 25th 2002. Europa and its shadow are present. The oval BA can be seen to be just past (preceding  the longitude as the GRS and has more of an elongated appearance than before the encounter with the GRS, almost as if it were being squeezed between the GRS and the STB as it passes. It has a rather flat border on its S. side and the visible boundary where it meets the GRS is very tenuous or non-visible.

 NEB rift is prominent and white spots and festoons are visible.

 The sky was very transparent, 9/10, and seeing was good, 7/10, with a 5 MPH SSW wind. Light dew was present. The weather was mild with the temperature in the mid 60's in the early evening.

 

 Jupiter images :

http://www.egrafton.com/02-25-02.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 for 01:100

 

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

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

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

                ~50 clear filter, No IR .1  seconds, SBIG filter

 

        Image data for 01:11

 

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

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

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

                ~50 clear filter, No IR .1  seconds, SBIG filter

 

        Image data for 01:31

 

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

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

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

                ~35 clear filter, No IR .1  seconds, SBIG filter   

                (25 February 2002 email)

 

@. . . . . . . Subject: Jupiter Observation March 7th 2002 01:09 UT

 

Hi Jupiter Observers.

  After two unusually strong late season cold fronts brought freezing weather to the Gulf coast of the USA, temperatures finally moderated as we got back into the steadier tropical air in Houston, Texas. The -1 C recorded at my house came very close to freezing the blossoms off my grapefruit tree.

  Here is an observation from March 7th 2002 01:09 UT. Being well past opposition, Jupiter is about 41 arc seconds in diameter. Ganymede's shadow can be seen about to exit the globe of Jupiter and is seen oblong by the foreshortening in longitude. The STZ is currently very nondescript at this CM and the STB belt is somewhat faded in this region. The NTB is very prominent and presents small rifts and spots along it's coarse. Several prominent festoons are present in the EZ. Barge B-4 is seen just above (south) of a rift in the NEB having already passed the CM.

  The sky was hazy with cirrus passing through, transparency 4-7/10, and seeing was good, 7/10, with a 8 MPH SSE wind. Light dew was present. The weather was mild with the temperature in the near 70 F in the early evening.

Jupiter image :

 http://www.egrafton.com/03-07-02.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

                ~35 clear filter, No IR .1  seconds, SBIG filter

                             (8 March 2002 email)

 

@. . . . . . . Subject: Jupiter Observation March 24th 2002 01:13 UT

 

 Hi Jupiter Observers.

Here is an observation from Houston Texas March 24th 2002 01:13 UT. The sky was clear, transparency 8/10, and seeing was good, 7/10, with a 3mph S.wind. No dew was present. The weather was mild with the temperatures in the 60s F in the early evening.

Jupiter image :

http://www.egrafton.com/03-24-02.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

                ~50 clear filter, No IR .12 seconds, SBIG filter

(24 March 2002 email)  

 Ed GRAFTON (Houston, Texas, USA)

egrafton@ghgcorp.com

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