ヘラス(Hellas:290W,-50)の北部に発生した黄雲は西に進み、ノアキス
（Noachis;3345W,-40)付近にまで進行してきました。形状は西を向いた馬
蹄形です。先端は明るくなっており、馬蹄形の内側は暗くなっています。
なぜこの部分が暗くなっているかは不明です。馬蹄形の内側がすでに晴れ
てきた部分だとすると、西に向かって１本のはっきりした大気の流れが存
在することになります。この様子は畑中／ウォクチュエンの各氏によって
鮮明にとらえられた。
  一方、東に進んだ黄雲は西経２００°付近にまで進行している様子がと
らえられている。ただ、本体からは随分離れているため、別にできたので
はないかと考えられる。マルガリティファー(Margaritifer sinus;20W,-10)
からソリス（Solis Lacus;90W,-25)付近には大きな変化は見当たらない。
(reported by 9 obsewrvers)

July 5th, 2003
Dust storm which occurred in the northern part of Hellas (295W,-50)
advanced towards the west and advanced near Noachis(350W,-40). The
form is the horse's hoof form which was suitable for the west. The
top of horse's hoof  becomes light. It becomes dark inside in the
form of the horse's hoof.It doesn't find a dark reason in this part.
The other hand, when making to be the part where the horse's hoof
-shaped inside brightens, the flow of the big atmosphere which
moves to the west advanced towards W200 in dust storm to have
advanced towards the east near this. It thinks that were particularly
made because this dust storm left a main unit. The change which is
big from Sinus  Margaritifer（20W,-10) to Solis lacus(90W,-25)
isn't seen.
FROM Makoto ADACHI
-------------------------------------------------------------------------------------

2003/07/05 17:12:27(UT)           2003/07/05 18:26:47(UT)          2003/07/05 18:41:00(UT)
CM=350.9d                         CM=9.0d                          CM=12.4d
1731 Video Frames Composite       1475 Video Frames Composite      921 Video Frames Composite
exposure = 1/25sec                exposure = 1/33sec               exposure = 1/25sec
15 fps  sbig IRbroker Filter      sbig IR broker filter            sbig IR broker filter

40cm Cassegrain+Vari-Extender(F30) 4 degree Prisum   Philips ToUcam Pro  Rezistax

1:30より撮影を始めたが、雲の中にあったため数秒間しかみえない状況が続き、2:50 いったん
撮影を残念した。 しかし、３：１５雲の切れ間が現れたので撮影を再開した。

ノアキスからサバエウスあたりに、黄雲の西の端らしき模様がみえる。一部は、サバエウスを越えて、
北半球に広がっているようにも見える。極冠には、特に明るい部分が、あるようだ。
雲の影響で、ＩＲ像や  青画像はとれなかった。
≪三重県熊野市  畑中明利≫

Dear all -
Mars was imaged July 5th between 9:30 - 9:42 UT.
Seeing was average with high humidity, haze
scattered high clouds and a slight breeze.
In spite of these conditions. Mars still
came out pretty decently.
Toward the morning limb, Iapygia is covered by dust clouds.
It is spreading and south Mare Tyrrhenum is obscured.
All other features look normal at this point.
http://hometown.aol.com/frankj12/mars2003index.html
[Frank J Melillo  Holtsville NY U.S.A]
≪フランク : アメリカ  ニューヨーク≫

Mars under very poor conditions with good transparency and very unsteady air
(2/10 worst).  However, the large scale dust storm in the Hellas Basin
appears to be spreading both eastward and westward, clearly shown in these
two images taken 20 minutes apart.  Clouds are within the Iapygia Viridis
and perhaps as far south as Mare Thyrrhenum and to points eastward and south
of Syrtis Major.

Image with the ASO 16" SCT at f/25, Toucam Pro with no filters, Registax
images, no processing.
Clay
[Dr. P. Clay Sherrod  Arkansas  State U.S.A]
≪クレイ  シェラード  アメリカ  アーカンサス≫

Dear all
Enclosed is the Mars image taken on 5 july morning.
Same as Eric, nearly exhausted.
Regards


Dear all
I consolidated all my mars images taken on 5 july 03 to show the development of dust storm.
Regards.
[Kwok-chuen Pau  Hong Kong, China]
≪ウォクチュエン  香港≫

Dear friends
I woke up a bit late this morning so missed the chance to capture the spreading
dust over Noachis as shown on KC Pau's iamge taken at 17:30UT.
The attached image was taken at 20:21UT and there is a light patch in
between Meridiani Sinus and Oxia Palus, especially bright in R and G.

Please feel free to comment.
Kind Regards
[Eric Ng, Tai Po site Hong Kong, China]

Hello all
This attached image was taken on 150 mm guide scope refractor of the
400 mm Zeiss Astrograph from Capricornio Observatory of Campinas.
I am on visit on this Observatory and attache my Philips Vesta Pro to take this image.
The Seeing is not so good 5/10 and transparence around 7/10.
Looks to me that we have a dust cloud under Mare Cimmerium.
The image was processing with Registax.

Best regards
[Guilherme Grassmann, Americana-San Paulo, Brasil]

Hi all
Here is my newest mars image taken in July 5th 2003 (UT) with good seeing(6/10)
and bad transparency(2/5).
VBR
[In-Joon Hwang, Kyungki-do, Korea]
[黄 仁駿 ファン イン ジュン 韓国]

[Damian Peach: Hertfordshire, UK.]
≪≪ダミアン−ピーチ  イギリス Hertfordshire≫≫

ALPO-Japan Latest Mars Section