Infrared astronomy: an introduction - School of Physics

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An overview of the JWST 6.5m deployable primary Diffraction-limited at 2µm Wavelength range 0.6-28µm Sun-Earth L2 orbit 4 instruments 0.6-5µm wide field camera (NIRCam) 1-5µm multiobject spectrometer (NIRSpec) Natural successor to HST & Spitzer 5-28µm camera/spectrometer (MIRI) 1-5µm fine guidance sensor / tunable filter imager (FGS/TFI) Passive cooling of telescope to
JWST: 7x area & 2.5x resolution of HST NASA / STScI
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Infrared astronomy: an introduction
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Western diamondback rattlesnake Aar
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Rattlesnake nemesis California grou
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But clever too ... Ground squirrel
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Human discovery of the infrared Her
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Brief history of early infrared ast
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Planck’s Law for blackbody radiat
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Planck’s Law: logarithmic blackbo
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Key features of Planck’s Law (II)
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Orion: the nearest major stellar nu
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Infrared penetrates dust extinction
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Reducing the effects of extinction
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Star formation in the “Pillars of
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Ices in and around protostars
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Accretion, outflow, and feedback HH
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The evolution of the Universe
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Redshifted diagnostics NIR MIR
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Boosting sensitivity via gravitatio
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Opening up the electromagnetic spec
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Infrared transmission windows Léna
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M, N, Q windows M N Q Glass
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Sources of background flux Several
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Gegenschein Yuri Beletsky / ESO
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Gemini-N
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Near-infrared OH airglow Ennico / C
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Cosmic microwave background Aitoff
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Importance of telescope thermal emi
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Mauna Kea in the Pacific Ocean Wain
Page 58 and 59: Antarctica: the coldest continent o
Page 60 and 61: Airborne infrared astronomy: SOFIA
Page 62 and 63: A brief history of IR space astrono
Page 64 and 65: IRAS (almost) all-sky survey Yellow
Page 66 and 67: IRTS survey coverage and results JA
Page 68 and 69: M16, the Eagle Nebula with ISO ESA
Page 70 and 71: Galactic centre with MSX US BMDO
Page 72 and 73: Orion Nebula & Trapezium Cluster Lu
Page 74 and 75: Herschel Space Observatory (2009) E
Page 76 and 77: Basic techniques for detecting IR p
Page 78 and 79: Detector materials in the Periodic
Page 80 and 81: Extrinsic semiconductor properties
Page 82 and 83: Schematic hybrid infrared array Det
Page 84 and 85: WIRCam 4096x4096 HAWAII2RG mosaic a
Page 86 and 87: HAWK-I on VLT UT4 Nasmyth platform
Page 88 and 89: Single-element detector raster imag
Page 90 and 91: Modern wide-field survey of Orion U
Page 92 and 93: Back to physics: Poisson distributi
Page 94 and 95: Poisson distribution (III) Key feat
Page 96 and 97: Application to signal-to-noise calc
Page 98 and 99: Calculating astronomical S/N (II) M
Page 100 and 101: Calculating astronomical S/N (IV) T
Page 102 and 103: Background-limited case Full signal
Page 104 and 105: Reducing the area subtended by sour
Page 106 and 107: European Extremely Large Telescope
Page 110 and 111: The extraordinary sensitivity of th
Page 112 and 113: Ariane 5 ECA launch from Kourou to
Page 115: Summary Key questions to be answere
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