Notes: *Since further cooling is only required by the Mid-IR instruments, the Near-IR instruments continued to operate after the end of the nominal mission. Hubble Space Telescope Herschel Space Observatory Launched: 2009 Launched: 1990 Mission operators: ESA Mission operators: NASA, ESA Mission duration: 3.5 years Mission duration: >20 years Instruments: Far-IR, Sub-mm Instruments: Near-IR, Optical, UV Operating Temperature: 0.3 K Operating Temperature: 300 K Mirror diameter: 3.5m Mirror diameter: 2.4m Satellite mass: 4000 kg Satellite mass: 11,000 kg Launch site: Korou, French Guiana Launch site: Kennedy Space Centre Launch vehicle: Ariane 5 Launch vehicle: Space Shuttle Discovery Orbit: Earth-Sun L2 point Orbit: Low-Earth orbit (600 km altitude) Approximate cost: £1 billion Approximate cost: £2 billion GALEX WISE Launched: 2003 Launched: 2010 Mission operators: NASA Mission operators: NASA Mission duration: 10 years Mission duration: 1 years Instruments: UV Instruments: Near-IR, Mid-IR Operating Temperature: 300 K Operating Temperature: 300 K Mirror diameter: 0.5m Mirror diameter: 0.4m
Notes: *Since further cooling is only required by the Mid-IR instruments, the Near-IR instruments continued to operate after the end of the nominal mission. Herschel Space Observatory Hubble Space Telescope Launched: 2009 Mission operators: ESA Mission duration: 3.5 years Instruments: Far-IR, Sub-mm Operating Temperature: 0.3 K Mirror diameter: 3.5m Satellite mass: 4000 kg Launch site: Korou, French Guiana Launch vehicle: Ariane 5 Orbit: Earth-Sun L2 point Approximate cost: £1 billion Launched: 1990 Mission operators: NASA, ESA Mission duration: >20 years Instruments: Near-IR, Optical, UV Operating Temperature: 300 K Mirror diameter: 2.4m Satellite mass: 11,000 kg Launch site: Kennedy Space Centre Launch vehicle: Space Shuttle Discovery Orbit: Low-Earth orbit (600 km altitude) Approximate cost: £2 billion GALEX WISE Launched: 2003 Mission operators: NASA Mission duration: 10 years Instruments: UV Operating Temperature: 300 K Mirror diameter: 0.5m Launched: 2010 Mission operators: NASA Mission duration: 1 years Instruments: Near-IR, Mid-IR Operating Temperature: 300 K Mirror diameter: 0.4m