Credit & Copyright: Tunc Tezel
(TWAN)
Explanation:
Observe the Moon
every night and you'll see its visible sunlit portion gradually change.
In phases progressing
from New Moon to Full Moon to New Moon again,
a lunar cycle or lunation is completed in about 29.5 days.
Top left to bottom right, this 7x4 matrix of telescopic
images captures the range of lunar phases for 28 consecutive nights,
from the evening of July 29 to the morning of August 26,
following an
almost complete lunation.
No image was taken 24 hours or so just after and just before
New Moon,
when the lunar phase is at best a narrow crescent, close to the Sun
and really hard to see.
Finding mostly clear Mediterranean skies required an occasional
road trip to complete this lunar cycle project,
imaging in early evening for the first half and
late evening and early morning for the second half of the lunation.
Since all the images are registered at the same scale
you can use this matrix to track the
change in the Moon's apparent size during the single lunation.
For extra credit, find the lunar phase that occurred
closest to perigee.
Tonight:
International Observe the
Moon Night
1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 |
Январь Февраль Март Апрель Май Июнь Июль Август Сентябрь Октябрь Ноябрь Декабрь |
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
|
Публикации с ключевыми словами:
Moon - lunation - Луна - лунный месяц
Публикации со словами: Moon - lunation - Луна - лунный месяц | |
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