日本の新井氏がデューカリオン（Deucalion;332W,-15)付近に侵入した
ダストの端がかろうじてとらえられています。一方イタリアのギアニ・
ツミーノ（Gianni Tumino ）氏の画像ではどうやらダストの東の端は進行
していない様です。クレイ・シェラード（P. Clay Sherrod）氏の画像で
は３日に見られたダストの濃さが濃くなっている様子が確認されました。
また、ダストの本体はやや東に拡がっている様子が鮮明に確認されました。
（reported by 5 observers)

July 4th, 2003
Arai(Japan) is just recording the end of the dust cloud which
invaded the east of Deucalion(332W,-15). Giani Tumino (Italy) is
recording that the progress of the dust storm stops. In the image
of P.Clay Sherrod, dust storm  which can have been seen on July
3rd recorded the state which was made thick. As for the main unit
of the dust storm, the state which is spreading to the east was
clearly recorded.
FROM Makoto ADACHI
-------------------------------------------------------------------------------------

2003/07/04 18:25:00(UT)
CM=18.19d
280mm SCT ,LE18mm(f/25)
Philips ToUcam Pro ,1/25 sec
1200 frames composite
Seeng:4/10 Transp.:3/5
コメント
埼玉県の新井です。
なかなか晴れませんね。
梅雨明けまでに黄雲が火星全面を被う
のではないかと心配しています。
[Masaru Arai Yorii-machi  Saitama-Prefecture  Japan]
≪埼玉県寄居町  新井 優≫

[Gianni Tumino   RAGUSA-Sicily,Italy]
≪ギアニ  ツミノ  ラグサ:イタリア≫

A sequence of Mars from this morning under poor seeing conditions and novice
webcam learner.  Nonetheless, the dust clouds from Hellas can be seen moving
slightly eastward in the last frame.  As Ed Grafton has noted, the
increasing movement of the Hellas/Syrtis regions toward sunrise and into
twilight for North American observers is leading to a period where this will
not be observable in only days because of morning twilight.

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≫

Hi All
Here are some Mars images from 4 July. Fireworks continues on Mars
dust clouds expanding and more forming.
Best

D.C. Parker, Coral Gables, FL. 16-in (41cm) Newtonian
ST9XE CCD Camera  Eyepiece Projection @ f/55.4
Integration Times:
RED (RG610 Red Filter, 610-1100nm: NO IR Rejection)    0.14-0.16s 1-4  images
GREEN (CFW8C, 531nm central; BWHM 86nm)    0.40s    6-8 images
BLUE (CFW8C, 450nm central, BWHM 116nm)   1.15s  6-8 images
Images bias,flat and dark corrected.

Seeing fair (6-7, Pickering).  Transparency  variable (0-4.5 m) with frequent
fast cumulus clouds.
Wind gusty, NE 2-15 kts. No dew. Altitude = 51-50 degrees.

Dust cloud still expanding, becoming regional. Main cloud brilliant and expanding
into Ausonia Borealis. Fingers of dust extending north into Tyrrhenum and Crocea.
Two new foci at eastern tip of Tyrrhenum. Dust streaks running N-S in Ausonia.
Dust in Hesperia. Duat clouds in Hellespontus on AM limb. Aeria very bright
giving the AM limb a yellowish cast. Clouds very bright in green and even in blue
suggesting significant height and energy.
Violet clearing onlt 1+ with some anomalous dark features.
Haze causing reduced contrast in the albedo features
[ Donald C Parker Coral Gables, Florida U.S.A]

Dear friends
Attcahed was the Mars taken in this morning, seeing and transparency were good.
I preliminary processed the shot taken at 20:56UT.
The spot on the SPC is very distinctly shown in the picture.
I put the RGB and the LRGB(L=R) for your reference.
Too bad that I need to work earlier today, the sky seems will keep clear a
several days more, I hope I wont be dried out or load down. :-)

Kind Regards
[Eric Ng, Tai Po site Hong Kong, China]

ALPO-Japan Latest Mars Section