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Eratosthenes


Eratosthenes

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: 7-8-2007, 9:15-10:30 UT Temperature: 22° C (73° F) Clear to partly cloudy, light winds Seeing: Antoniadi II Colongitude 190.2 ° Lunation 23.25 days Illumination 42.2 % Frank McCabe



    really nice sketch!
    Gary, Thank you much, I am glad you like it. Frank
    Photo
    Glassthrower
    Feb 08 2008 06:37 PM
    Superb sketch. :)
    Mike, Thank you much for saying so. It was a fun sketch of a nice terminator view. Frank
    great sketch!
    John, Thank you very much. I enjoyed doing this sketch and with another 10 minutes I would have completed it. Frank :)



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