Blue Fringe Umbra | Glendon Howell

Photographer
Glendon Howell
Email
howellgl@mindspring.com
Location of photo
Gates County, NC
Date/Time of photo
2008-FEB20 9:46 PM EST
Equipment
Prime focus through Meade 8-inch f/6 Newtonian OTA on Losmandy G-11 mount. Camera was Canon Digital Rebel XTi. Camera was set to Program AE mode, -2 stops underexposure. Actual exposure was 2.5 seconds at ISO 100.
Description
Taken just prior to beginning of totality, the photo shows a blue fringe at the rim of the umbral shadow, indicicative of Danjon L = 4.0
Website
http://www.freewebs.com/howellgl/
All comments must follow the Sky & Telescope Terms of Use and will be moderated prior to posting. Please be civil in your comments. Sky & Telescope reserves the right to use the comments we receive, in whole or in part, and to use the commenter’s username, in any medium. See also the Terms of Use and Privacy Policy.

COMMENT