Infrared Astronomy Satellite (IRAS) Infrared Space Observatory (ISO) Launched: 1983 Launched: 1995 Mission operators: NASA Mission operators: ESA Mission duration: 10 months Mission duration: 2.5 years Instruments: Mid-IR (Camera), Mid-IR Instruments: Near-IR (Camera), Mid-IR (Camera) (Spectrometer) Mid-IR (Spectrometer) Cooling: Passive + Cryogenic Cooling: Passive & Cryogenic 2 K 2K Operating Temperature: Operating Temperature: Coolant: 600 litres liquid helium Coolant: 2300 litres of liquid helium Mirror diameter: 0.7m Mirror diameter: 0.6m Total satellite mass: 800 kg Satellite mass: 2400kg Launch site: Vandenberg Airforce Base, California, Launch site: Korou, French Guiana USA Launch vehicle: Ariane 4 Launch vehicle: Delta rocket Orbit: High-Earth orbit (elliptical, ranging from 1000 Orbit: Low-Earth orbit (900km altitude) 70,000 km) – Approximate cost: £400 million Approximate cost: £300 million Akari Spitzer Space Telescope Launched: 2003 Launched: 2006 Mission operators: NASA Mission operators: JAXA Mission duration: 5.5 years* Mission duration: 1.5 years Instruments: Near-IR (Camera), Mid-IR Instruments: Near-IR (Camera), Mid-IR (Camera), (Spectrometer), Mid-IR (Camera) Far-IR (Camera) Cooling: Passive & Cryogenic Cooling: Passive & Cryogenic Operating Temperature: 5 K Operating Temperature: 2 K
Infrared Astronomy Satellite (IRAS) Infrared Space Observatory (ISO) Launched: 1983 Mission operators: NASA Mission duration: 10 months Instruments: Mid-IR (Camera), Mid-IR (Spectrometer) Cooling: Passive + Cryogenic Operating Temperature: 2 K Coolant: 600 litres liquid helium Mirror diameter: 0.7m Total satellite mass: 800 kg Launch site: Vandenberg Airforce Base, California, USA Launch vehicle: Delta rocket Orbit: Low-Earth orbit (900km altitude) Approximate cost: £400 million Launched: 1995 Mission operators: ESA Mission duration: 2.5 years Instruments: Near-IR (Camera), Mid-IR (Camera) Mid-IR (Spectrometer) Cooling: Passive & Cryogenic Operating Temperature: 2K Coolant: 2300 litres of liquid helium Mirror diameter: 0.6m Satellite mass: 2400kg Launch site: Korou, French Guiana Launch vehicle: Ariane 4 Orbit: High-Earth orbit (elliptical, ranging from 1000 – 70,000 km) Approximate cost: £300 million Spitzer Space Telescope Akari Launched: 2003 Mission operators: NASA Mission duration: 5.5 years* Instruments: Near-IR (Camera), Mid-IR (Spectrometer), Mid-IR (Camera) Cooling: Passive & Cryogenic Operating Temperature: 5 K Launched: 2006 Mission operators: JAXA Mission duration: 1.5 years Instruments: Near-IR (Camera), Mid-IR (Camera), Far-IR (Camera) Cooling: Passive & Cryogenic Operating Temperature: 2 K
SpaceTelescopeDesigner_StudentGuide_KS5.docx