From Johan WARELL
® . .
. . . . . . Date: Thu, 02 Oct 2003 19:44:10 -0400
Subject: Mars Sep. 26, 27, 28, 30, Oct. 2
Dear Dan, Masami and Richard,
I'm sending you here a new set of Mars observations, mainly
with the ToUCam.
I believe I have now figured out the cause of the strange
regular features seen in some of the previous Mars images. Probably they are
due to an insufficient number of color levels that are possible to shuffle from
the camera to disk at 15 frames per second, which is the rate I have been
using. Acquiring data at a minimal 5 fps has so far removed this effect, I will stick to this in the future. It means the AVI
files have to be longer in time to get the same number of sharp images, but the
result is better as far as color depth is concerned.
The images and drawings will be sent in separate mails.
Best wishes,
® . .
. . . . . .Date: Sun, 05 Oct 2003 13:36:39 -0400
Subject: Mars Sep 30
(RESEND), Oct
3, 4,
5
Dear friends,
A new batch of Mars images from the past three nights,
seeing has improved a little as the daytime temperature is gradually
decreasing.
In the morning hemisphere, Calydon-Phoenicis
Lacus with small Noctis Lacus in between is
interesting as it has been less blue than the surrounding dark albedo features, making it appear redder. The arc is
prominent in blue images as a dark L-shaped feature. The effect seems to be
reduced near the CM.
I am also resending the Sep 30 image as the title date was
incorrect.
Best wishes,
® . .
. . . . . .Date: Sun, 05 Oct 2003 13:51:08 -0400
Subject: Mars Sep 26, 27, 28, Oct 2
RESEND
Dear Masami,
I do not see some of my Mars images and drawings on the CMO
web page that I sent you previously, so I am resending them here.
All the best,
® . .
. . . . . .Date: Tue, 07 Oct 2003 03:24:11 -0400
Subject: Mars Oct 6
Hi,
Sending you an image from last
night Oct 6. An extended morning cloud over Solis Lacus and surrounding
light deserts to the north of Chryse is apparent,
unlike the night before. The extent is much like the case on Aug 31, Sep 2, 3,
as the cloud was similarly absent on Aug 30 (as indicated by my image data only).
The image also indicates that Calydon-Phoenicis Lacus
is still very dark in blue at the extreme limb under the morning cloud.
The image follows in the next mail.
Best wishes,
® . .
. . . . . .Date: Tue, 07 Oct 2003 03:24:21 -0400
Subject: Mars Oct 6 (image)
Johan WARELL (Lunar and Planetary
Laboratory,
