Highland Crater Sarcobosco

Sketching: For this sketch I used: black Strathmore 400 Artagain paper 9”x 12”, white and black Conte’ pastel pencils and a blending stump. After scanning, Brightness was decreased (-2) using my scanner. Telescope: 10 inch f/ 5.7 Dobsonian and 6 mm and 4mm eyepieces 241x and 362x Date: 1-3-2009, 0:05 - 1:20 UT Temperature: - 6°C (22° F) clear, calm Seeing: Antoniadi III, occasionally II Colongitude 349.9 ° Lunation 6.5 days Illumination: 34.9 % Libration: in Lat. -4° 23’, in Long. -7° 59’ Frank McCabe