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Crater Barrow at Sunrise


Crater Barrow at Sunrise

Sketching: For this sketch I used: black Strathmore 400 Artagain paper 12”x14”, white and black Conte’ pastel pencils and a blending stump. After scanning, Brightness was slightly decreased (-4) and contrast increased (+4) using Microsoft Office Picture Manager. Telescope: 10 inch f/ 5.7 Dobsonian and 6 mm eyepiece 241 x Date: 7-10-2008, 1:45-2:50 UT Temperature: 22° C (72° F) Partly Cloudy, calm Seeing: Antoniadi III Colongitude 353.1 ° Libration in Latitude: 6° 30’ Lunation 7 days Illumination 49.2 % Frank McCabe






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