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Partial Phase of the Lunar Eclipse 1/2001

Date:09.01.2001 Time:about 21:15 UT Exposure:1/60s
Field of View:0.75o x 0.93o Emulsion:Kodak Ektachrome 200 Filter:none
Instrument:f=1000mm, 1/10 Place:Göttingen Observer:T. Credner

© Copyright by the observers

The moon emerges from the curved shadow of the earth. One significant difference to a normal phase of a half moon is that the shadows border is quite diffuse at an eclipse. This is due to light diffraction and scattering in earths atmosphere. The terminator of a half moon appears very sharp (see image)!