Credit & Copyright:
Image Courtesy: Ball Aerospace
Explanation:
Who are these masked men?
Technicians from Ball Aerospace and NASA at
Marshall
Space Flight Center's X-ray and Cryogenic Facility, of course,
testing primary mirror segments
of the
James Webb Space Telescope (JWST).
Scheduled for launch in 2014,
JWST
will be optimized for the
infrared exploration
of the early Universe,
utilizing a primary mirror 21.3 feet across,
composed of 18 hexagonal segments.
Here, a group of JWST mirror segments are being prepared
for tests to assure they meet the exacting mission requirements.
The technicians' suits and masks help prevent contamination of
the mirror surfaces.
At the Marshall X-ray and Cryogenic Facility,
the mirrors
are tested in the large circular chamber after evacuating
the air and cooling the chamber
to -400 degrees
Fahrenheit
(only 60 degrees above absolute zero).
The extremely low pressure and temperature simulate
the JWST
mirror operating environment in space.
JWST mirror segment testing will continue for the next 18 months.
Image Courtesy: Ball Aerospace
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:
telescope - телескоп
Публикации со словами: telescope - телескоп | |
См. также:
Все публикации на ту же тему >> | |
