From
Damian PEACH
@. . . . . . . . Here is an observation from yesterday morning. Seeing
was good enough to keep my eye at the eyepiece for a while...
Best Wishes
INFORMATION FOR MARS OBSERVATION, MAY 8th, 2001.
D. A. Peach,
12" (30.5cm) Meade SCT.
Magnifications: 406X.
Filters: Unfiltered/W#21.
Seeing poor-fair (3-5) at 12degs altitude. Seeing good (6-8) at ~40 degs altitude.
Transparency good (4.5mag), high haze, cirrus.
Observation Time:
Mars CML: 187.1
Ls: 157.4
Diameter: 15.40"
Altitude of Mars: 11.5degs.
Comments: Seeing allowed a reasonable view this morning.
Bright morning limb hazes
extending over
very weak. Albedo
markings appeared prominent, especially Mare Cimmerium.
Lemuria
appeared dark and thin in the
Northern hemisphere. Hyblaeus Extension dark/dusky. Propontis
also dark. No evening limb
clouds/hazes noted across Tharsis.
@. . . . . . Here is an observation from this morning. Better seeing
allowed more to be seen. I also just realized, which is worth notions that my
observation was made at almost exactly the same time as Antonio's latest
images. Best Wishes
(10 May 2001 email)
INFORMATION FOR MARS OBSERVATION,
MAY 9th, 2001.
D. A. Peach,
12" (30.5cm) Meade SCT.
Magnifications: 406X.
Filters: Unfiltered/W#25/W#38A.
Seeing poor-fair (3-6) at 12degs altitude. Seeing very good (7-8) at ~40 degs altitude.
Transparency very good (4.5mag.)
No Wind. Moderate/Heavy dew.
Observation Time:
Mars CML: 187.1
Ls: 157.4
Diameter: 15.60"
Altitude of Mars: 12.5degs.
Comments: Better seeing allowed slightly better views this
morning. Bright Morning limb haze
again extending over
Elysium cloud again weak. Light Evening
limb haze noted over Tharsis. No
SPH very bright across Eridania,
Ausonia, Thyle II.
Albedo markings appeared normal.
Mare Cimmerium dark, Mare Tyrrhenum
also dark on the morning
limb. Hesperia
visible during stable moments. Hyblaeus dark/dusky. Trivium/Cerberus also dark/dusky.
Also of note is that both Hyblaeus & Trivium/Cerberus were visible through the W38A filter. Propontis
dark/dusky.
Lemuria dark.
@. . . . . . . . . . Here is another Mars observation from this
morning. Very poor seeing occurred this morning unfortunately, so no images.
Some details were noted despite the seeing.
Best Wishes
(12 May 2001 email)
INFORMATION FOR MARS OBSERVATION, MAY 11th,
2001.
D. A. Peach,
12" (30.5cm) Meade SCT.
Magnifications: 406X.
Filters: Unfiltered/W#25/W#38A.
Seeing very poor (0-3) at 12degs. Seeing fair (4-6)
at 40degs.
Transparency good (4.0mag) slight high haze.
Observation Time:
Mars CML: 161.9
Ls: 159.5
Diameter: 15.94"
Altitude of Mars: 12.5 - 12.0degs.
Comments: Very poor seeing this morning, but some details
were noted with patience.
A morning limb haze was again present, across
The albedo markings appeared more washed out
due to seeing, but all the major markings across the region were noted in the
W25 filter. Mare Sirenum/Cimmerium
prominent.
Trivium/Cerberus faintly visible. Propontis also faintly visible at times. Lemuria
also observed as on previous mornings.
@. . . . . . . . . . Here are my latest observations (from
Most interesting was that the Ophir/Candor region appeared noticeably bright in red (W#25
filter.) Best Wishes
(22 May 2001 email)
INFORMATION FOR MARS OBSERVATION, MAY 22nd, 2001.
D. A. Peach,
12" (30.5cm) Meade SCT.
Magnifications: 406X.
Filters: W#25/W#80A/Unfiltered.
Seeing fair-variable (4-7) with stable periods
occurring. Seeing good (5-8) at ~40 degs. Transparency very good (4.5mag) scattered high
cirrus. Light wind, variable direction.
Light dew.
Observation Time:
Ls: 165.3
Diameter: 17.77"
Altitude of Mars: 12.0 - 10.8degs.
Comments: Periods of stable seeing occurring this morning at
times allowed a considerable amount to be seen. The finest views were through
the W#25 filter.
Mare Erythraeum appeared dark with varying albedo across the region. The darkest areas were Aurorae
Sinus, Protei Regio. Margaritifer Sinus/Oxia Palus also appeared dark. Eos/Pyrrhae
Regio appeared lighter. Juventae
Fons appeared dark, as did its neighboring small
projections. Sinus Meridiani was well observed early in the session and also
appeared dark. Agathodaemon/Tithonius Lacus appeared
prominent "Y" shape, giving the prominent Solis Lacus its classic
"eye of Mars" appearance.
Ophir/Candor appeared
noticeably bright in W#25, but not so much in the W#80A. Mare Acidalium appeared well defined and dark. Nilokeras appeared fainter, but Idaeus
Fons/Achillis Fons appeared
dark.
In the W#80A filter, Chryse appeared cloudless, but a brilliant morning limb
haze (MLH) was noted extending from the brilliant SPH, northward across Tharsis, Tempe, to the NPC. Also faint clouds noted on the
evening limb over Moab/Eden. These were also noted unfiltered, but not as
prominently.
Damian PEACH (
ALPO/BAA Jupiter Sections; BAA
Saturn Section
mailto:%20dpeach78@netscapeonline.co.uk
http://members.netscapeonline.co.uk/dpeach78/index.htm