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Kaiya and Avery. Spitzer space telescope . Expectations. 1990’s- $2.2 billion With new infrared detecting technology and research into cryogenic systems and orbits, currently costs 1/3 of original estimate to maintain

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expectations
Expectations
  • 1990’s- $2.2 billion
  • With new infrared detecting technology and research into cryogenic systems and orbits, currently costs 1/3 of original estimate to maintain
  • Mission estimated to last 2.5-5+ years (until liquid helium/cryogen wears out).
spitzer
Spitzer
  • Liquid helium depleted in 2009. The two shortest wavelength cameras still function today (Spitzer Warm Mission).
  • Launched from Cape Canaveral, FL on Monday, August 25, 2003. 3824 days since launch. 191,617,259 km from Earth.
  • 1990’s: infrared telescopes were around, but it was difficult to observe due to long exposure times and Earth’s Atmosphere.
expectations1
Expectations
  • Originally, it was proposed to go up for short duration 30 day flights (with launchings occurring every week).
  • By 1983, expected to be long duration. One of the first times a satellite was proposed to be far away from Earth and not trailing Earth’s orbit (protects it from heat and reduces amount of necessary coolant).
results
Results
  • First telescope to capture light from extrasolar planets (“hot Jupiters”)
  • Gave new insight as to how planets are formed
  • More of a bar structure to the Milky Way Galaxy than earlier thought.
  • Double helix (80 light year long) nebula.
spitzer basics
Spitzer Basics
  • Infrared
  • 13 feet tall
  • 2,000 lbs.
  • Maps weather patterns
  • Launched August 25, 2003
  • Lyman Spitzer died before it launched.
engineering
Engineering
  • Has to stay hot and cold
  • CTA
  • Thermal radiation
  • IRS
  • IRAC
  • MIPS
  • Star tracker
  • Orbits behind earth
  • 85 cm mirror diameter
  • Ritchey Chrétlen design