LtE in CMO #269

From Edward Arnold GRAFTON

Hi Jupiter observers

Here is an observation from February 1st 2003 at 07:08 UT. Europa can be seen about to exit the globe of Jupiter. This close to opposition, the disk of Europa and it's shadow are nearly on top of one another and the shadow seems to be partially occulted by Europa. The NTB is very weak and can only be seen in a few segmented strips. The transparency was fair, 4/10 with some light fog and seeing was fair, 5/10 with no wind and heavy dew. The weather was cool with the temperatures in the low 50s F in the early mourning hours.

Jupiter image: http://www.egrafton.com/feb-01.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, .4 seconds, SBIG filter

10 GREEN + IR rejection, .4 seconds, SBIG filter

10 RED + IR rejection, .4 seconds, SBIG filter

~15 clear filter, No IR .12 seconds, SBIG filter

Hi John

Here is an observation from February 2nd 2003 at 06:04 UT. The NTB is very weak at this longitude as it was on the earlier post from February 1st and can only be seen in a few segmented strips. The transparency was fair, 4/10 with some light fog and cirrus clouds and seeing was fair/good, 6/10 with a 3mph S. wind and heavy dew. The weather was cool with the temperatures in the upper 50s F in the early mourning hours.

Jupiter image: http://www.egrafton.com/feb-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:

10 BLUE + IR rejection, .4 seconds, SBIG filter

10 GREEN + IR rejection, .4 seconds, SBIG filter

10 RED + IR rejection, .4 seconds, SBIG filter

~25 clear filter, No IR .12 seconds, SBIG filter

(4 February 2003 email)

Hi Jupiter Observers

Here is an observation from February 18th 2003 at 06:00 UT. The transparency was fair, 6/10 with some light cirrus clouds moving through. The seeing was good, 8/10 with a 5mph S. wind and light dew. The weather was cool with the temperatures in the upper 50s F around local midnight.

Jupiter image: http://www.egrafton.com/2-18-02.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:

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 .10 seconds, SBIG filter

(18 February 2003 email)

Hi Clay

Yes the area just preceding the GRS and S. of it is interesting. Don Parker got an image of this area on Jan. 11th which resolved it and remarked that it had a jig jag appearance. His image can be seen at:

http://www.egrafton.com/jan-11.jpg

I also left off the CMs off the image and will add them later. They are:

CM1 151

CM2 040

CM3 226

Ed Grafton

At 04:22 PM 2/18/03 -0600, ALPO_Jupiter@yahoogroups.com wrote:

>Stunning detail Ed, just beautiful; I am hoping I have the orientation

>right, but the areas south and preceding the GRS within the STcurrent are

>absolutely fascinating and your image is the first I have seen that is

>revealing what is truly going on up there....not only is the activity of

>very rare type for this latitude, but the colors that are demonstrated are

>truly incredible and very interesting.

>I would definitely call this at least a "minor disturbance" of some large

>degree of scale.

>Wonderful work as always.

>Clay

(18 February 2003 email)

Hi Jupiter Observers

Here is an observation from February 18th 2003 at 06:25 UT, about 25 minutes later than the previous February 18th image that I sent along. The transparency was fair, 6/10 with some light cirrus clouds moving through. The seeing was good, 8/10 with a 5mph S. wind and light dew. The weather was cool with the temperatures in the upper 50s F around local midnight.

Jupiter image: http://www.egrafton.com/02-18a.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

49 clear filter, No IR .10 seconds, SBIG filter

(21 February 2003 email)

Hi Jupiter Observers

Here is an observation from February 23rd 2003 at 05:01 UT. The transparency was excellent, 9/10. The seeing was average, 6/10 with a 3mph S. wind and light dew. The weather was cool with the temperatures in the upper 50s F around local midnight.

Jupiter image: http://www.egrafton.com/02-23-03.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 .10 seconds, SBIG filter

(23 February 2003 email)

Ed GRAFTON (Houston, TX, USA)

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