Seven Years of WISE
Δημοσιεύτηκε στις 16 Δεκ 2016
WISE,
the Wide-field Infrared Survey Explorer, surveyed the entire sky in 4
mid-infrared bands at 3.4, 4.6, 12 and 22 microns with vastly greater
sensitivity than previous all-sky surveys at these wavelengths. WISE
surveyed everything more than 1 AU from the Sun including asteroids,
comets, nearby brown dwarfs and star forming regions both in the Milky
Way and in distant galaxies. The 12 and 22 micron channels were very
powerful for detecting Ultra-Luminous Infrared Galaxies, and WISE has
detected some of the most luminous galaxies in the Universe. The WISE
short wavelength channels are very powerful for detecting old cold brown
dwarfs, and WISE has detected objects as cool as 250 K, and the 3rd and
4th closest stellar systems to the Sun. WISE reported 3.75 million
asteroid observations to the Minor Planet Center in 2010, and measured
the radiometric diameters of more than 150,000 objects. WISE has a 40 cm
cryogenic telescope, 1024x1024 arrays, a scan mirror to freeze images
on the arrays while the spacecraft scans continuously, and takes 47'x47'
images every 11 seconds in all four bands from an IRAS/COBE style
Sun-synchronous nearly polar low Earth orbit. WISE was launched on 14
Dec 2009 and entered routine survey operations on 14 Jan 2010. It
completed full sky coverage on 17 July 2010, and then starting warming
up in early August. WISE ran with its shorter wavelength bands until 1
Feb 2011. WISE was reactivated as NEOWISE-R to search for more Near
Earth Objects, and has surveyed in its two shortest bands from 13 Dec
2013 to the present.
Host: Giovanni Fazio
Speaker: Ned Wright (UCLA)
the Wide-field Infrared Survey Explorer, surveyed the entire sky in 4
mid-infrared bands at 3.4, 4.6, 12 and 22 microns with vastly greater
sensitivity than previous all-sky surveys at these wavelengths. WISE
surveyed everything more than 1 AU from the Sun including asteroids,
comets, nearby brown dwarfs and star forming regions both in the Milky
Way and in distant galaxies. The 12 and 22 micron channels were very
powerful for detecting Ultra-Luminous Infrared Galaxies, and WISE has
detected some of the most luminous galaxies in the Universe. The WISE
short wavelength channels are very powerful for detecting old cold brown
dwarfs, and WISE has detected objects as cool as 250 K, and the 3rd and
4th closest stellar systems to the Sun. WISE reported 3.75 million
asteroid observations to the Minor Planet Center in 2010, and measured
the radiometric diameters of more than 150,000 objects. WISE has a 40 cm
cryogenic telescope, 1024x1024 arrays, a scan mirror to freeze images
on the arrays while the spacecraft scans continuously, and takes 47'x47'
images every 11 seconds in all four bands from an IRAS/COBE style
Sun-synchronous nearly polar low Earth orbit. WISE was launched on 14
Dec 2009 and entered routine survey operations on 14 Jan 2010. It
completed full sky coverage on 17 July 2010, and then starting warming
up in early August. WISE ran with its shorter wavelength bands until 1
Feb 2011. WISE was reactivated as NEOWISE-R to search for more Near
Earth Objects, and has surveyed in its two shortest bands from 13 Dec
2013 to the present.
Host: Giovanni Fazio
Speaker: Ned Wright (UCLA)
Κατηγορία
Άδεια
- Τυπική άδεια YouTube
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