Space observatories |
Space observatories |
Apr 11 2007, 05:17 PM
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Junior Member Group: Members Posts: 72 Joined: 22-December 05 Member No.: 616 |
I’m loosing track of observation missions so I turned to UMSF again
The last few years many space agencies planned space-based telescopes such as CNES with COROT (2006), NASA with WISE (2009) and James Webb Telescope (2013), ESA with Herschel-FIRST (2008) and DARWIN-formation (2020). Can anyone point out a table which specifies what part of the electromagnetic spectrum each of these are using? And which are used for finding extra-solar planets? Danke! |
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Guest_PhilCo126_* |
Apr 11 2007, 06:47 PM
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#2
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Guests |
Well, there’re basically 6 methods to detect planets around other stars (extrasolar planets): Direct imaging (using coronagraph to minimize the light of star), Astrometry (positional astronomy), Radial Velocity method (Doppler-effect), Transit photometry (planet transits its star), Microlensing (gravitational bending of light) and the Timing method which in fact lead to the first detection of a planet outside our solar system by timing the signal difference between the extrasolar planet and its star orbiting a common point of gravity.
Indeed, there’re a lot of space-based telescopic observation missions, each using a specific part of the electro-magnetic spectrum ( Gamma-rays , X-rays, Visible , InfraRed , Radio ). Putting together an overview list might be a good idea for some kind of ‘reference’ section here on UMSF... I found the following on wikipedia: http://en.wikipedia.org/wiki/Timeline_of_t...ving_technology |
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