Grazing the Umbra (Partial lunar eclipse 2009)

Posted by ayiomamitis
on Friday, January 1, 2010

by Anthony Ayiomamitis

 

We were very fortunate to have relatively very good conditions for last night's partial lunar eclipse and which was a great way to end the year, the decade as well as IYA 2009. Although the depth was only 8%, the moon's partial entry into the umbral shadow was quite obvious both naked eye as well as through the telescope at high power. The time series above is based on exposures spaced 30 minutes apart and which beautifully documents the moon's entry into the penumbra and umbra as well as its consequent exit. Technical Details: Location: Athens, Greece (38.2997° N, 23.7430° E) Date: Dec 31, 2009 @ 19:22:30 - 23:22:30 UT+2 Equipment: AP 160 f/7.5 StarFire EDF, AP 1200GTO GEM, Canon EOS 5D Mk 1, Baader UV/IR-Cut Filter Exposures: 9 x 1/320 sec, ISO 100, RAW image format, 4368x2912 image size, Manual Mode Further details at http://www.perseus.gr/Astro-Eclipses-2009-12-31b.htm

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