November 30, 2018
Flat Enough To Sit On a Table
Originally published September 16, 2009
image by John Stetson, Casco Bay, Maine
Earlier in the week the haze obscured the moon until it was 10 degrees above the horizon. On Sunday the 6th conditions were more favorable for observing/imaging the moon on the horizon. A fellow observer noted that among the islands we could see on Casco Bay, there was an island that could be seen that night that usually was below the horizon. The moon appeared a full four minutes before the expected time of moonrise (based on the Naval Observatory predictions/timetable). The earth's atmosphere was effectively acting as a lens to bend the light of the moon such that it appeared early and at the bottom, the image was inverted.
Aug 6, 2009. 4" aperture refractor on a Losmandy G-11 mount, a 2.5x barlow, and a DSLR (ISO 200, 1/2.5 sec.). Notice the "green flash"?
Another distorted Moonrise by John.
Yesterday's LPOD: An Excess of Phases?
Tomorrow's LPOD: Return of the Sky