List of largest infrared telescopes

List of largest infrared telescopes, by diameter of entrance aperture, oriented towards large observatories dedicated to infrared astronomy.

Overall

Name	Effective aperture m (in)	Wavelength Coverage	Site	Year	Refs
VISTA	4.1 m (161″)	0.85 – 2.3 μm	Paranal Obs., Chile	2008	^[1]
UKIRT	3.8 m (150″)		Mauna Kea Obs., Hawaii	1978
Herschel Obs.	3.5 m (138″)	60-672 μm	Space, Earth L2	2009	^[2]
IRTF	3 m (118″)		Mauna Kea, Hawaii	1979	^[3]
SOFIA	Lua error in Module:Convert at line 1851: attempt to index local 'en_value' (a nil value).		747SP; Stratosphere	2010	^[4]^[5]
WIRO	Lua error in Module:Convert at line 1851: attempt to index local 'en_value' (a nil value).		Jelm mountain, 9656 ft. (2943m)	1977	^[6]

Name	Effective aperture cm (in)	Wavelength Coverage	Year	Refs
Herschel Obs.	350 cm (138″)	60-672 μm	2009	^[2]
Hubble WFC3	240 cm	0.2-1.7 μm	2009
Spitzer	85 cm	3-180 μm	2003	^[4]
Akari	68.5 cm	2-200 μm	2006	^[4]
ISO	60 cm	2.5-240 μm	1996	^[4]
IRAS	57 cm	5-100 μm	1983	^[4]
SWAS	44–70 cm	540 - 610 μm	1998
WISE	40 cm	3-25 μm	2010	^[4]
MSX	33 cm	4.3-21 μm	1996	^[7]
Human Eye	~1 cm	0.39-0.75 μm	-

For comparison

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↑ Emerson, J.P., Sutherland, W.J., McPherson, A.M., Craig, S.C., Dalton, G.B., Ward, A.K. (2005). The Visible & Infrared Survey Telescope for Astronomy. The Messenger
↑ ^2.0 ^2.1 Lua error in package.lua at line 80: module 'strict' not found.
↑ IRTF homepage
↑ ^4.0 ^4.1 ^4.2 ^4.3 ^4.4 ^4.5 JPL: Herschel Space Observatory: Related Missions
↑ Lua error in package.lua at line 80: module 'strict' not found.
↑ University of Wyoming 2.3-meter Telescope (WIRO)
↑ Wikipedia - Midcourse Space Experiment - November 29, 2012