λ=221°Ls, (ω=148°~ 157°W, φ=21°S), δ=18.9", ι (phase angle)=33°
Seeing fair (5-7, Pickering). Transparency variable (0-5.0 m) with frequent fast cumulus clouds.
Wind E 7-14 kts. No dew. Altitude = 51°.
Note:
Minimal clouds. Only a small orographic over Arsia Mons. Thin AM limb arc. Light haze over Eridania, bright in green.
Possible small dust cloud in Northern Electris near southern border of Atlantis I. Trivium-Cerberus remains weak.
SPC rifts prominent: Ulyxix Fr., Rima Australis, Magna Dep. Thyles Mons bright near CM.
Violet Clearing = 0. Olympus very dark in blue and green.
PARKER uses a 41 cm Newtonian working at f/55 with an eyepiece projection together with an SBIG ST9XE ccd camera, equipped with a CFW-8C filter wheel and RGB interference filters
Integration times:
Red (610 -1100nm) : 0.12s 1-2 images (RG610, NO IR ejection)
Green (488 - 574nm) : 0.37-0.39s 5-9 images
Blue (392 - 508nm) : 1.20s 5-7 images
Images bias, flat and dark corrected.
Observer: Donald C PARKER, Coral Gables, FL. USA