Mario Frassati(Drawing:203mm F10 SCT, 250 X )
Dear Mercury observers,
this is a new Mercury drawing of 2002 April 25 around 18:05 UT.
The seeing was II-III Ant.
I used W21 filter.
Some bright features were again visible.
Solitudo Criophori and Solitudo Phoenicis were dark.
Solitudo Atlantis(?) was visible like a dark spot.
The south Polar Region was bright.
A bright large zone was visible at the limb in the southern hemisphere.
Two unnamed circular bright areas were visible approx. at the same lat.
and long. of my Mercury drawing of April 17. Large ray systems?
Crescentino (VC) Italy
[ Mario Frassati Crescentino (VC) ITALY ]