0323 DPc Note

23 March 2002 (347°Ls)

MARS IMAGES,
MARCH 23rd, 2002.

D. A. Peach, Rochester. Kent, UK.
12" (30.5cm) Meade SCT @ f/29.1. ST-5c camera.
SBIG RGB Filter set & True Tech IR Filter.

Total Exposure Times:
IR (800 - 1200nm Filter.)     : 29 x 0.21 secs
Green Light (+IR rejection ) : 25 x 0.40 secs
Blue Light (+IR rejection)    : 30 x 0.45 secs

Seeing good-excellent (6-10), but deteriorated later.
Transparency excellent (5.5mag, but later clouded up from N.
Wind Nw (5mph.) No dew.

Mars CML: 247 degs
Altitude: 33 degs.
Diam: 4.46"

Note Trivium Charontis is visible as a dusky marking, as well as albedo variations across Mare Sirenium/Cimmerium. Also the hesperia mouth is visible, which spans about 0.25" at the moment. The IR image probably is, i believe close to the limit of what the 12" is able to resolve.