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Petavius Crater


Petavius Crater

Sketching: For this sketch I used: black Strathmore 400 Artagain paper, white and black Conte’ pastel pencils and a hard blending stump. Telescope: 10 inch f/ 5.7 Dobsonian with 6mm (241x) and 4 mm (362x) eyepieces Date: 5-29-2009 1:20-3:15 UT Temperature: 13°C (55°F) Clear, calm Seeing: Antoniadi mostly I, [ the collapsed lava tube down the center of Vallis Alps would have been easy under the seeing conditions of this night ] Colongitude 329.5 degrees Lunation 4.5 days Illumination 28% Moon was at Perigee just 3 days ago Oak Forest, Illinois Frank McCabe






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