MARS IMAGES 13 July, 2000

D.C. Parker, Coral Gables, FL.
Lynxx PC camera 16-in (41cm) F/6 NEWTONIAN
Eyepiece Projection @ f/38.7

Integration Times:
BLUE (Koheisha, 445nm peak central; BWHM 105nm) 1.92s
GREEN (Koheisha, 540nm peak central; BWHM 75nm) 0.64s
RED (RG610 - No IR Rejection) 0.16s
Images flat and dark corrected.

Seeing good (6-7, Pickering).Transparency good (5m). West wind, 0-3 kts. Altitude = 33-37 degrees. No dew.

Dust continues, but mainly limited to northern hemisphere: planet-encircling. Large dust cloud in Hellas with fingers extending northward over Hadriacum, Iapygia, Ionium. Cloud across Crocea. Note western border of Syrtis Major bright with possible anomalous albedo features in eastern Aeria. Antigones F. conspicuous, with Astaboras glimpsed. Protonilus, Coloe P. dark, while Sabaeus Sinus, Serpentis M., Deltoton S., Yaonis, Hellespontis, and Syrtis Minor largely obscured. Pityusa In. very dark near S. limb. NPH remains conspicuous, while SPC barely visible. Bright cloud on SW limb.