CM=(37 44 68 72 76 87 88 123 124 132 171 176 193 194 195 303 )
解説（安達）
日本は天候が悪く、観測は全て海外からのものである。クレイ・シェロッ
ド(P.Clay Sherrod)氏の画像からは、アルシア・シルバ(Arsia Silva;125W
-5)の雲が北西に流されているのが読み取れる。この付近の風向を表す一つの
情報になる。カルメロ・ザネッリ(Carmero Zannelli)氏の画像では朝霧の様
子が良く判る。
E.D.グラフトン(E.D.Grafton)氏の画像はいつもすばらしい。極冠の内部の様
子が非常に良く判る。北極地方に拡がる雲の様子を非常に良く表している。
デビッドムーア(David M.Moore)氏の画像ではニクス・オリンピカ(NIx
Olympica;130W,+20)が東のリムでかすかに白雲に覆われている様子が記録さ
れている。明るい姿を見るのはこれからだろう。D.C.パーカー（D.C.Parker)
氏の画像では南極冠の右側（キンメリウムの経度）が暗くなり、急激な縮小
が始まっていることが読み取れる。
(reported by 11 observers)

August 17th, 2003
Japan had inclement weather and all report became sent from the
foreign countries. In the P.Clay Sherrod's image, it is possible to
understand to be applied to the northwest in the cloud of Arsia
Silva (125W,-5). It will show the direction of the wind near this.
Carmero Zannelli took a morning mist. The image of E.D.Grafton is
always wonderful. It understands a state inside SPC very well. It
shows the state of the cloud which spreads to the arctic region well.
In the image of David M.Moor, Nix Olympica (130W,+20) was limb in
the east and the state which is faintly made white was recorded.
That Nix Olympica becomes bright will become earlier from now. In
the image of D.C.Parker, it understands the state that the SPC side
of Mare Cimmerium (220W,-20) becomes dark and that SPC becomes small
rapidly

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

An image under pretty steady skies with the 0.41cm SCT @ f/35.  Considerable
detail is emerging and this captures the new blue cloud as well as the
volcanoes in the Tharsis region.

The large blue cloud that has been monitored for days now has begun to shear
slightly to the north and spread slightly in that direction.  Attached is an
image that shows the cloud distinctly as it fans outward toward the north
and west from its original position.

Note also that the conical nature of Olympus Mons is clearly depicted in the
inset of the cloud and this feature.
[Dr. P. Clay Sherrod  Arkansas  State U.S.A]

2003/08/17 00:24(UT)
C.M.= 72.47   Seeing: 6/10  Transp: 7/10
Telescope: Newton homebuild D= 412 mm. F= 1790 mm. f/4,3;
Webcam Philips Toucam Pro + filtro IR-Cut for RGB - Red filter without IR-Cut for Infrared image - 15
FPS at 1/25 s. exposure;
Eyepiece projection: Meade SP 15 mm - about F/26 (about 10,8 meters);
507 frames of 1800 for RGB image and 658 of 1800 frames for RIR image stacked with Registax;
Site: Ventimiglia di Sicilia - (Palermo) Sicily;
Acquisition: K3CCDTools;
Elaboration: Registax 1.1; Astroart 3.0; Photoshop 7.0
[Carmelo Zannelli ,  Sicily-Italy]

Hi Mars Observers
Here is an image from August 17th 2003 at 07:12 UT. The sky transparancy was
very good 8/10 and the seeing was very good 8/10.
C14 @ f/39, ST5 CCD

RED  + IR rejection, .25  seconds, Edmund filter
GREEN + IR rejection, .5  seconds, Edmund filter
BLUE  + IR rejection, .8  second, Edmund filter
Luminance, IR + Red , 600-1000nm  .07  seconds,  Edmunds filter
[Ed Grafton, Houston Texas U.S.A.]

Seeing seemed good, but images turned out a bit softer than I would like.
I wish Mars was always this size!  I downsized these 10 percent.
Morning limb Arc irregular. Some clouds lingering over Mare Tyrrhenum.
On the evening terminator the Olympus Mons and Tharsis complex are showing some evening cloud tops.
Olympus Mons visible in Red on the evening terminator.
SPC not as bright.
NPH increasing in size and brightness.
Thanks
[ David M Moore Phoenix, Arizona U.S.A]

Fair seeing(5/10) and bad transparency(2/5).
VBR
[In-Joon Hwang, Kyungki-do, Korea]

Here are some Mars images from 17 August. Taken with 16-in Newtonian. In
addition I have attached an image taken by Sheldon Faworski with my 10-inch
Mewlon, Paramount ME, and ToUCam.
Note tiny orographic cloud over Arsia Mons and bright aureole in the
Olympus Mons region.

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)    0.11-.14s 1-5  images
GREEN (CFW8C, 531nm central; BWHM 86nm)   0.30s 6-9 images
BLUE (CFW8C, 450nm central, BWHM 116nm)   1.00-1.15s  6-10 images
Images bias,flat and dark corrected.
Seeing variable (4-7 Pickering), improved late.
Transparency 4-6 m with haze, freq fast cumulus, very good after lightning storms passed!
Wind NE-SE 2-10 kts. Altitude =40-47 degrees.
SPC rifts and outliers prominent. NP Hood remains bright in blue.
Small orographic cloud over Arsia Mons, brightens as it moves toward evening limb. No evidence of dust.
Violet clearing = 1+.
Region around Olymous Mons appears as a conspicuous light areole in red and green light.






Here is another Mars image from 17 August.
[ Donald C Parker Coral Gables, Florida U.S.A]

Dear Mars Observers
After some rains and closed skys the weather open,the temperature is around 10ｰ Celsius this night.
I must wait until the planet reach 45ｰ in the sky to start some stable images.
The Nix Olympica is very clear on images and one interesting data is the Solis Lacus region:Tithonius Lacus
Phoenicis Lacus,Daedalia, Thaumasia and Bosporos are joint by dark area forming a round circle on Solis Lacus
(Mars Maps shows those areas separeted by clear spaces).
Using Red Filter two bright points is showing on SPC.
Regards to all
Best regards
[Guilherme Grassmann, Americana-San Paulo, Brasil]

2003/08/17 18:08(UT)
CM=332, Dia=24.68, P= 344.74  Seeing 6/10, Trans 7/10  C14 SCT 354cms
ToUcam Pro  , 1500 images, 1/25 second, IR-X
Hello
I have changed telescope from a Meade 6inch achromat refractor to a Celestron C14.
The Perth Observatory in Western Australia have allocated telescope time on their C14 to continue
with imaging Mars.
The increase in resolution is significant.
The rift in the SPC is quite prominant now with Novus Mons sticking out clearly at about 320 degrees.
[Brett Turner, Perth Western Australia]

[Cristian Fattinnanzi :  Macerata ITALY]

Observation places :  Valmontone (Rome)
[Giovanni Quarra Sacco:Firenze, Italy]

ALPO-Japan Latest Mars Section