Rosenberger and Vlacq near the Terminator

Sketching: For this sketch I used: black Strathmore 400 Artagain paper, 9”x 10”, white and black Conte’pastel pencils and a blending stump. Brightness was slightly decreased after scanning. Telescope: 10 inch f/5.7 Dobsonian and 6mm eyepiece 241x Date: 11-28-2007 5:30-7:00 UT Temperature: -3°C (26°F) partly cloudy, breezy Seeing: back and forth between Antoniadi II and III Co longitude: 135.2° Lunation: 18.5 days Illumination: 80.3 % Frank McCabe