1999/5/11, 10:00 EDT, Bowie MD, 20inch f/6.4 reflector 200/270x: 35k jpg image

Seeing 7 out of 10. Less detail than May 10. Sinus Meridiani was the darkest and more apparent marking, in moments of good seeing the darkest northern extension looked like the shadow of moon! Appeared to be white clouds on the limb just south of Sinus Meridiani. Clouds over the south pole seemed to have a dark band around their edge sunlight shadow on the planet surface? Whiteblue clouds north of Nilokeras appeared to have spread in the the break between Niliacus Lacus and Mare Acidalium.

For the full story, see:
http://www.ladyandtramp.com/mars/images/mars51199.jpg