From Frank J MELILLO
@. . .
.Here are my latest images of Mars on 4-29-2001.
I
noticed that Chryse is very bright in red light Wr. #25 on the morning side. I'm
not quite sure if it is ground frost or dust. On 7:43 UT, Chryse "bright area"
was just beginning to appear at the morning terminator and it rotated will
inside the disk on 8:31 and 8:40 UT. It was the brightest part on the disk. Did
anybody observe that? Or to confirm it? It is not bright in Wr. #47 violet
filter.
In Wr.
#47, the SPH was very obvious. Regards,
(29
April 2001 email)
(Note)：The following is a reply from M GASKELL to F
MELILLO:
I
looked at Mars with a 16-inch as Chryse had come round the morning terminator on
2001-iv-28 (UT) and it was strikingly yellow. I had a group of students with me and
some of them noticed the yellowness too. We didn't use a red filter. Chryse was a similar striking yellow
during the pre-Pathfinder-landing dust activity two apparitions
ago.
（29 April 2001）
Martin
GASKELL
@. . .
. . .Here are my latest image of Mars on 5-2-2001.
The
seeing was terrible and I almost gave up. Thanks to the adaptive optics (AO-2)
and I finally had a chance to use it. Yes, it did help a little under this
severe condition. But at least I have one decent shot each with both Wr. #25 and
Wr. #47 filters.
The
features are pretty much normal and free of dust. The SPH is easily visible in
Wr. #47. Regards,
(2 May 2001 email)
Frank J
MELILLO (NY, USA)
Director, the ALPO Mercury Section