Thursday Night Mars: February 11, 2010

Sketching: The eyepiece sketch is the one on top in graphite pencil. The second color sketch was made indoors. White sketching paper 8" x 11"; HB graphite pencil, blending stump for blending orange, brown, yellow and blue Crayola pencil shavings. -1 brightness adjustment was needed after scanning to get the scan image to closely match the real sketch. Date 2/12/2010 – Time 2:45-3:10 UT Telescope: 13.1 inch f/5.9 Dobsonian and 9mm eyepiece 218x Temperature: -6°C to -12°C (21°F- 11°F) partly cloudy, slight winds Transparency 3/5 Seeing: Antoniadi IV Frank McCabe