Technical information regarding the sketch:
At my current residence of Sandy Oregon in the home driveway; 30 miles east of Portland Oregon:
After Observing Mars through my Nexstar 5i and 10.1″ f/4.5 Coulter Odyssey Dobsonian telescope on two evenings of February 5th and 6th 2010, I produced this large 22″ X 30″ pastel impression with artists conceptual Martian landscape showing a dust storm over the polar cap region as science news reported today. The pastel chalks were applied to black Stonehenge 100% cotton cold pressed pastel paper. Through broken clouds over two nights, I eventually rendered most of the prominent albedo features on the martian surface; the left hemisphere edge exhibited a definite blue limb haze along most of the discs edge on the evening of February 5th at approximately 7 UT ~ 9 UT.