この日は、日本からの観測はありません。エリック氏の画像では
南極冠の中央に火星の砂漠と同じ色の暗部が写っています。ブルー
の画像でも非常に暗く写り、驚いています。半月程前から南極冠の
中央が暗いことは分かていましたが、砂漠と同じ色になっているこ
とは、極めて重要です。本当に砂漠のようになっていると言うこと
は、南極冠の中央がすっかりとけきったことを表すからです。過去
に、極冠がドーナツのようにとけていった記録はありませんから、
極めて重大な問題です。原因を深く考えないといけないと思います。
また、南極冠の20Wの位置にはエッジに輝点が見られます。非常によ
く目立って見えています。北極付近は相変わらず白雲が出ています。
ムーア氏はヘラス(Hellas;300W,-50)がやや白っぽい雲に覆われて
いることを観測しました。
  パ−カ−氏は、キンメリウム(Mare Cimmerium;220W,-20)付近の
様子をとらえました。細部まで非常に詳しく撮られており、今シー
ズン、今までの最良の画像です。(repoerted by3 observers)

2003,May,30
Today, there is not observation of Japan. In the image of
Eric, the part with the dark color which is the same as the
desert falls to  The center of SPC. In the blue image, it is
very darkly deteriorated. It understood the state which is
as dark from the front of the half month. The color which is
the same as the desert is important. It does do the SPC center
will of have been stubborn fully or? this is a very important
case. The cause must be well thought of. In the past, it has
never seen such example. Many bright points are seen by the
frame of SPC. They are conspicuous very well.
Dave Moore took the state that Hellas(300W,-50) becomes white.
D. Parker sent an image near Mare Cimmerium(220W,-20). This
is a very excellent image. It understands very well to the
detail.

FROM Makoto ADACHI
-------------------------------------------------------------------------------------

Dear friends
Here is the image taken at 20:39UT. The seeing was slightly better.
Meridiani Sinus is visible near p. limb.
SN ration of blue frame is especially poor due to low transparency Minami,
the dust streak you mentioned seems better shown in this picture.
Kind Regards
[Eric Ng, Tai Po site Hong Kong, China]

A nice monsoon flow rose the humidity levels in AZ and gave steady seeing for the 30th.
Thunderstorms erupted on the evening of the 30th causing some poor seeing for the May 31 image.
I broke out the Stellacam to produce an IR image as well.
The blue turned out too dark and is not very good.
It appears something is going on in the Hellas basin. Nothing much, but something.
It's appearance seems a bit strange to me.
Also noting that the NP region is getting brighter each evening I observe, visually and with imaging.
Also, with the IR image, could there be some high dust form the disturbances over Acidalium showing on
the horizon following  Syrtis Major.
It appears very bright in IR.
Thanks
[ David M Moore Phoenix, Arizona U.S.A]

MARS IMAGES   30 May, 2003

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)    0.11s 33-38  images
GREEN (CFW8C, 531nm central; BWHM 86nm)    0.39s  8-9 images
BLUE (CFW8C, 450nm central, BWHM 116nm)      1.40s  9-13 images
Images bias,flat and dark corrected.

Seeing good (8-9, Pickering). No wind. Transparency 4m with high haze/fog.
Heavy dew. Altitude = 43-47 degrees.

Small localized clouds (rotate with planet) on SW limb over extreme eastern Hellas, western Ausonia.
These are well-defined in red light, very bright in blue and green.
Thin AM limb arc; north polar clouds.  Elysium cloud free.
Trivium-Cerberus remains weak; Hyblaeus Extension very dark, appears elongated, most likely due to foreshortening.
[ Donald C Parker Coral Gables, Florida U.S.A]

ALPO-Japan Latest Mars Section