日本からの観測はありませんでした。エリック氏(Eric Ng)の画像に出て
いる東西方向の白線は。キンメリウム(Mare Cimmerium;210W,-25)付近に出
ている白線の様子から判断して、火星にできた物ではなく、光学系に起こっ
た問題ではないかと思われます（安達の見解）。ハドリアカム(Mare
Hadriacum;275W,-35)がやや淡くなったように思われます。(reported by 7
observers)

July 18th, 2003
There was not observation from Japan. The white line which comes out
to the image of ErichNg is not cloud and it thinks like the problem
which was caused optically. (by Adachi) Mare Hadriacum (275W,-35)
seems to have become rather light.
FROM Makoto ADACHI
-------------------------------------------------------------------------------------

A couple of fairly detailed images from this morning (July 18 UT) showing
the vicinity of Solis Lacus and surrounding areas.  Of particular interest
again this morning is the very bright scintillating spot on the SPC
perimeter nearing the CM on the 09:43 image; these images present the SPC
overexposed in processing, but this very small and concentrated spot was
well shown on Ed Grafton's image of July 17 on this same meridian (about 130
degrees)

Note also the reddish hue associated with the volcanic peaks in the Tharsis
region; Olympus Mons and others are well shown in both images.  As always
these are taken with the ASO Petit Jean telescope, a Meade 16" SCT operating
at f/35 and Toucam with Registax.
[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≫

Mars was imaged again on July 18th between 9:24 UT and 9:42 UT.
The seeing was a lot better than the night before.
But still, not good enough to capture the details in the SPC region.

[Chen Hsuan-Hsiao :  Kaohsiung Taiwan R.O.C]
≪チェン-スン-シァオ  台湾≫

Hi everyone : last night the excellent observing conditions and the nearly
20" apparent diameter allowed me to take my best images of the planet so
far.
No dust is seen, but the SPC is showing much interesting phenomena. The
images show a kind of almost separated segment of the cap, duller, to the
left of the image. And, the very bright pointed part of the cap at CM ~ 10°
is still there since the previous images taken from Europe over the last
week. Could this be the first sights of the "Argenteus Mons" ?
I have also added two color images taken with the color ToUcam, for fun.

Best wishes
[Christophe Pellier  Bruz City , France]
≪クリストフ  ペリエ  フランス≫

(Japanese)
17:41 と 18:10 の画像を比較して見ました。
Tyrrhenum 地域の北部に  わずか30分間で位置が移動している黄色味を帯びた筋をみつけました。
私にはそれが気象現象のものかどうかわかりません。
青画像と赤画像ではずいぶん写りかたが異なっています。
18:10の画像は17:41よりやや悪かったです。
同様な画像を得られた方いませんか。
ご意見をお待ちしております。







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

Folks
2003/07/18 21:38(UT)
Meade Archromat Refractor 152mm
CM=293, Dia=19.91, P= 343.97
ToUcam Pro, 1900 images, 1/25 second, V/IR-X
Seeing 6/10, Trans 7/10
This will be the last image for a week or so, the winter weather is closing in on Perth again.
Attached image is probably best to date with the 6inch achromat.
The dark areas are red looking as the achromat struggles with the red a little.
However, resolution of the attached image is fairly good for this type of instrument.
Regards
[Brett Turner, Perth Western Australia]
≪ベレット・ターナー  ウエスタン:オーストラリア≫

[Ferruccio Zanotti ,  Ferrara-Italy]

ALPO-Japan Latest Mars Section