08.04 1997 Timo Lahde, Helsinki, Finland
20.00-20.40 UT
S=III-IV, 205/1000 mm Newtonian Reflector + Apodising screen
Magnification = 200x (5,0 mm Eudiascopic)
263x (3,8 mm Eudiascopic)
Filters: Wratten #21, #38a
Diameter: 13,4"
Altitude: 37 degrees
CM: 78-80 degrees
Position Angle: 21,3 degrees
Phase: 0,976
Lunae Lacus with Nilokeras was on the Central Meridian. Niliacus Lacus,
Achillis Pons and Mare Acidalium were also well seen. Tractus Albus was
slightly darker than the surroundings, with Tempe being very bright. Arcadia
was between these two in darkness. Tharsis and Xanthe were light, and Thaumasia
and Solis Lacus appeared to be hazy. There were two large cloud masses,
one being over Chryse and Niliacus Lacus, the other located above Amazonis,
Memnonia and Mare Sirenum.
Timo Lähde
Helsinki, Finland