Star trails and planets

Challenge #123 in the Eclectic series. Hosted by Ro13.
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Star trails and planets...with or without a telescope.
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Analemma
by LouM
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26 exposures, at 2 week intervals to record the solar disc positions over 1 year. Each exp[osure at exactly noon. Camera was placed in a prealigned metal bracket for indexing south in azimuth.
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Submitted: Friday, 25th May, 2012 12:45 (GMT)
Taken: Friday, 25th May, 2012
Focal length: 35 mm
Shutter speed: 1/1000 sec
Aperture: F22
ISO: 25
Notes: Camera stored in freezer in Zipper bag with dessicant between shots, and allowed to warm for 2 hours before each exposure. 27th exposure using a meter to capture normal sky and trees, hand held, without sun image. . Vertical angle was set by calculation to just fit image into the frame. Tilt was caused by exposing at standard time noon instead of noon based upon exact longitude. One sun image near top loop caused by indexing error when a volunteer took over during my vacation.
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