Credit & Copyright: S. Guisard &
J. F. Salgado,
ESO,
Bulletpeople.com;
Music:
Arcadia (Licence: Kevin Macleod)
Explanation:
Why is the Earth moving in the above video?
Most time lapse videos of the night
sky show the stars and sky
moving above a steady Earth.
Here,
however,
the frames have been digitally rotated so that it is the stars that stay (approximately)
steady, and the Earth that moves beneath them.
The video dramatically shows
the actual rotation of the Earth, called
diurnal motion,
in a clear and moving way, as if the camera were
floating free in space.
The
telescopes featured in the video are the
Very Large Telescopes
(VLT) in
Chile,
a group of four of the
largest optical telescopes
deployed anywhere in the world.
A discerning
observer of the
above time lapse movie may
also note the use of
laser guide stars,
zodiacal light, the
Large and
Small Magellanic
Clouds, and fast-moving, sunlight-reflecting,
Earth-orbiting satellites.
The original video, on which the above sequences are based, can be found
here.
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 2025 |
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:
movie - diurnal motion - VLT - суточное вращение - Очень Большой Телескоп
Публикации со словами: movie - diurnal motion - VLT - суточное вращение - Очень Большой Телескоп | |
См. также:
Все публикации на ту же тему >> | |
