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nobody

16 Dec 2013 02:00



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Citez:
One of the primary instruments of the lander is the Lunar-based Ultraviolet Telescope (LUT) that is used to observe galaxies, binary stars, active galactic nuclei and bright stars.
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The LUT instrument sets out to perform multiple-day observation campaigns, looking at variable stars and active galaxies in the near-UV band. Objects that are bright in the NUV band include variable stars, binaries, novae, quasars and blazars. LUT will attempt to study the variability of these objects to examine the temperature and accretion rate in order to better understand stellar atmospheres and improve current models.
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The LUT instrument consists of a Ritchey-Chretien telescope.
LUT has an aperture of 150mm and uses a pointing mirror that features a two-dimensional gimbal to track objects. A Charge-Coupled Device enhanced for observations in the ultraviolet band is used as detector. The CCD uses pixels 13 micrometers in size. LUT covers a wavelength range of 245 to 340 nanometers and is capable to detect objects at a brightness down to 13 mag.
Chang'e 3 - Mission Overview: http://www.spaceflight101.com/change-3.html

P.S. referitor la limita de 13 mag, am ceva dubii  ...