LtE in CMO #246,247,248,249
From Nélson FALSARELLA
@. . . . . . I have made my CCD Mars images using a
video camera (Black and White Astrovid 400), but I never was attentive to see
some brightening on surface of Mars. I will see again my images recorded of the
Edom Promontorium. Who Knows I see some brightening too.
But I think
that the atmospheric disturbance across the planetary images creates
deformations and brightening variations over the images.
We need to
valorize only the brilliance more persistent or stronger. Faint brightening and
short duration event I can’t to valorize.
I also saw
brightness over Mars on the past. In October 1988, I remember have seen the
Tharsis region across the eyepiece of my 200mm telescope. Suddenly the Tharsis
region got a additional shine that prolongs for some minutes. The shine
appeared phosphorescent, very beautiful. It happened only on Tharsis. I never
saw this phenomenon again.
Other
phenomenon of shine, happened in the last Mars approximation, in 1999. By
several days, I saw across the eyepiece a brightening spot, like a cloud, over
Cydonia region, to the south of the bright NPC. Sometimes the spot was so
bright that it appeared a second polar cap. This brightening didn’t
happen all the time and neither all the days. I got this image in CCD Image.
See the next E-mail with a image annexed. I can’t to explain this
phenomenon. I think in a reflection of NPC over the atmosphere of Earth or
perhaps Mars.
Thank you and
Clear Skies
(
@. . . . . . .How are you? Last Saturday (June 9), I
sent to you, by normal mail, my new drawings about Mars. There you will see
photometry and meteorology studies made by myself at the eyepiece of my old
Newtonian D=200mm f6.5. I am using a 4mm ortho eyepiece, and a 325X
magnification.
I am sending to Mr. Murakami, my images CCD of
Mars made using my telescope and a video camera ASTROVID 400. Can you use my
images on your Gallery page of CMO?
I have a MEADE LX200, 16", but your
planetary image is poor and without contrast. The focalization is very
difficult. Perhaps your main mirror is very heavy. I prefer to use my old
newtonian D=200mm for Mars. Your image, under a good seeing is very good.
Thank
you about the news about Mars and the same about the Communications in Mars
Observations. They are very useful for me.
On
June 4, I was seeing Syrtis Major in the CM at 2h00 UT and I think to have seen
a "Blue Clearing" phenomenon. The albedo features was very strong
across the deep blue filter.
Clear Skies
(
@ . . . . .
.I think that the orographic cloud over Elysium appears in the morning.
See my images annexed here.
Thank you
(
@ . . . . . . .In the last message I sent you the
Mars Images of 11 June and 12 June. The
image of day 11, I already sent you, some days ago. The new image is the 12
June.
Here
I am sending the new image of
Thank you
(
@. . . . . . I am sending a new Mars image, made on
June 16. We, in south of
Thank
you
(
@. . . . . . .I have seen in my Mars images and in
Mars Global Surveyor images*, a dark and narrow line throughing the edge of the
South Polar Cap (SPC). Your photometry varies between 7.0 and 6.0 (0 for the
Polar Cap and 10 for the dark sky), bypass all the South Polar Cap and it is
interrupted only in Argyre. The dark line is seen over the terrain apparently
free of ice. This south region doesn't have a very dark feature like the
Olympia Planitia, seen around the north pole. I was thinking in
I
am sending in the next E-mail, the Mars image made by myself by comparison with
the Mars Global Surveyor image.
*Mars Global Surveyor Mars Images:
http://mars.jpl.nasa.gov/mgsmsss/camera/images/opposition_6_2001/index.html
Thank you Clear Skies
(
@. . . . . . . (To Mk) How is the dust storm? Here,
in
(
@ . . . . . . . . I am seeing the dust storm. Now,
21h15m UT, MC~340degrees, I am
seeing the dust storm near the east limb. I can't see the Syrtis Major.
"It disappeared". I see only its north spike, but it is very faint.
The dust storm is brighter over
(
@. . .
. . . . . . . I am sending here a Mars image made by myself, on
June 30 (see right). See the
disappearance of Syrtis Major. See the faded north portion.
More images made on June 30, I will send to you in the next days.
Did you see other images made in the same time from
(
@ . . . .
. . . .I am in accordance with you. Mars is yellowish and the albedo features
is faded. I was seeing now the Sinus
Sabaeus quadrant and all the albedo features are clearer.
For
example: See the comparison between the photometry made in early June and today
(0 for the Polar Cap and 10 for dark sky):
Sinus
Sabaeus: 7.0 and 5.5
North
portion of Syrtis Major: 8.5 and 5.5
Mare
Serpentis: 6.0 and 4.5
Margaritifer
Sinus: 4.5 and 4.6 (conserved)
Today
Syrtis Major back in its old feature.
(
@ . . . . . . . . . I saw Mars on July 3, ~21h30m
UT, Sinus Sabaeus Quadrant. Its albedo features faded away more. Now, its color
is very yellowish.
Syrtis
Major was faint. The north portion of Syrtis Major was darker than its south
portion. I have seen that, since May, the north portion of Syrtis Major is
darker, when it is seen at right (east) of Central Meridian (CM) and less dark
when it seen at left (west) of CM. Hellas is very bright and is better across
red filter: dust.
The North
Polar Hood (only in blue filter and integral light) was very intense, more than
yesterday. North Polar Cap was bright and small.
I made CCD
images. ( I don't know why, but my CCD camera doesn't get the North Polar Hood
images, but get the South Polar Cap).
Sincerely
(
@. . . . . . . On July 10, I saw the Ghost
Planet or better, the Dust Planet. Using my CCD video camera I could see all
the albedo features. But they were very faint. The
South Polar Cap was very difficult to see. Around NPC, had a faint shine, seen
across the blue and green filters. On the
east limb had a haze, seen across the blue and Green filter too. North Polar
Hood was back again and bright too (seen only with blue filter). A dark band
was seen in your perimeter: perhaps was Utopia, Lemuria and Panchaia.
Today,
July 11, the sky is cloudy.
(
@. . . . . . .Yesterday (July 12) I saw Mars again:
North Polar Hood was present and bright, but it was
seen across green filter too, but in blue was better. South Polar Cap was very
difficult to see. The had a shine seen in blue and green. A Limb Haze was
present in the east limb, seen in blue and green. The Albedo Features was
almost deleted. I saw the east of Cimmerium and Hyblaeus. A dark ring around
North Polar Hood was visible. Mr. Alexandre Amorim, from
I saw in your message that
Thank
you by your messages. I have sent them to Reanet (Rede de Astronomia
Observacional - REA), our network in
I
hope that my observations be useful for you and OAA.
(
@. . . . . . How is the dust? Your Gallery of the
Dust Storm is very beautiful and didactic. Congratulations!
I am sending here, a Mars image made by my friend,
from Campinas-SP, for the Gallery too.
Yesterday, day 13, was difficult to see Syrtis
Major, but Cimmerium and Hyblaeus was more easy.
(
@ . . . . . . . On July 25, 21h50m UT, CM=123ﾟW,
Joined to
the southeast limb and covering Aurorae Sinus, Solis Lacus, Erythraeum mare,
was a bright dust cloud. Beside this cloud, at west, a great and evident dark
spot interbreeded the
Olympus
Mons, or Nix Olympica, was seen as a very evident dark spot. I think that
Ascraeus Mons was visible too, as a dark spot.
North
Polar Hood (NPH) was very bright and wide. A dark contour followed the edge of
the NPH.
Mars
seems another planet.
(
Nelson FALSARELLA (