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Walled Plain Craters Hipparchus and Albateginius


Walled Plain Craters Hipparchus and Albateginius

Sketching: For this sketch I used: black Strathmore 400 Artagain paper, white and black Conte’ pastel pencils and a blending stump. Contrast was slightly increased after scanning. Telescope: 10 inch f/ 5.7 Dobsonian and 6 mm eyepiece 241X Date: 5-24-2007 2:05-3:20 UT Temperature: 23° C (74° F) Partly cloudy with haze, light winds Seeing: Antoniadi II Colongitude 356.7 ° Lunation 7.28 days Illumination 52 %






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