LtE in CMO #281

From Edward Arnold GRAFTON



. . . . . . .Date: Sat, 11 Oct 2003 09:41:36 -0500 (CDT)

Subject: Mars Observation October 11th 2003 at 03:08 UT

 

Hi Mars Observers

 

Here is an image from October 11th 2003 at 03:08 UT. The sky transparency was good 7/10 and the seeing was fair to good 6/10.

 

C14 @ f/39, ST5 CCD

 

Image at: http://www.ghg.net/egrafton/10-11-03.jpg

 

 

To see Mars from one month ago (Sept 9th) at a similar CM go to this URL:

 

http://www.ghg.net/egrafton/m9-09-03.jpg

 

RED + IR rejection, .2 seconds, Edmund filter

GREEN + IR rejection, .6 seconds, Edmund filter

BLUE + IR rejection, .8 second, Edmund filter

Luminance, IR + Red , 600-1000nm .06 seconds, Edmunds filter

. . . . . . .Date: Tue, 14 Oct 2003 11:38:23 -0500 (CDT)

Subject: Mars Observation October 14th 2003 at 03:23 UT

 

Hi Mars Observers

 

Here is an image from October 14th 2003 at 03:23 UT. The sky transparency was good 8/10 and the seeing was good 8/10.

 

C14 @ f/39, ST5 CCD

 

Image at: http://www.ghg.net/egrafton/10-14-03.jpg

RED + IR rejection, .2 seconds, Edmund filter

GREEN + IR rejection, .4 seconds, Edmund filter

BLUE + IR rejection, .8 second, Edmund filter

Luminance, IR + Red , 600-1000nm .05 seconds, Edmunds filter

 

. . . . . . .Date: Sun, 19 Oct 2003 12:19:58 -0500 (CDT)

Subject: Saturn October 19th 2003

 

Hi Saturn Observers

 

Here is an observation from October 19th 2003. The spot at -29 degrees lat. can be seen on the S. edge of the SEB preceding the CM. This spot was imaged by the HST on Aug. 25th and has been shown to have a drift of -7.3 degrees/day. The globe of Saturn shows quite a bit of detail in this image. Several dark condensations (spots) can be seen at various locations on the globe. The sky was clear, the transparency was excellent 9/10, and seeing was good, 7/10 with a few moments when it approached 9/10. No wind and light dew. The weather was cool with the temperatures in upper 50s F.

 

Saturn image: http://www.ghg.net/egrafton/10-19-03.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, 1 seconds, SBIG filter

10 GREEN + IR rejection, .8 seconds, SBIG filter

10 RED + IR rejection, .6 seconds, SBIG filter

Clear filter, No IR .3 seconds, SBIG filter

 

 

. . . . . . .Date: Mon, 20 Oct 2003 09:44:45 +0200 (MET DST)

From: Agustin Sanchez <wupsalaa@bi.ehu.es>

Subject: Saturn's spots update - IOPW

 

Hi Saturn observers,

 

Thanks to the very good images some observers are sending to the IOPW, we have been able to confirm that the -29 deg spot tracked by Ed Grafton is the same that one of the spot at this latitude captured with the Hubble on 25 August. This spot moves rapidly eastward in System III (as expected). See graph W_29S.

 

The second spot at -42 deg moves westward slowly (also as expected, see graph W_42S), and it is in the place where last year convective spots formed.

 

The last image by Ed Grafton (Oct. 19) show apparently small dark spots in temperate - tropical latitudes similar to those captured by HST last apparition, but they must be confirmed by their rotation observation. The image also shows features in the Equatorial Zone. These are very important to confirm the drop in the equatorial jet observed between 1996-2002.

 

Good observations!

 

Agustin

Universidad del Pais Vasco

Alda. Urquijo s/n

48013 BILBAO (Spain)

e-mail: wupsalaa@bi.ehu.es

 

. . . . . . .Date: Mon, 20 Oct 2003 12:49:07 -0500 (CDT)

Subject: Saturn 0ctober 20th 2003

 

Hi Saturn Observers

 

Here is an observation from October 20thth 2003. The sky was clear, the transparency was very good 8/10, and seeing was very good. No wind and heavy dew. The weather was cool with the temperatures in upper 50s F.

 

Saturn image: http://www.ghg.net/egrafton/10-20-03.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, 1 seconds, Edmunds filter

10 GREEN + IR rejection, .8 seconds, Edmunds filter

10 RED + IR rejection, .6 seconds, Edmunds filter

Clear filter, No IR .3 seconds, Edmunds filter

 


Ed GRAFTON (Houston, Texas, USA)

egrafton@ghg.com


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