Mauna Kea Observatory 3.0-m NASA Infrared Telescope Facility (IRTF)
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Telescope Name: 3.0-m NASA Infrared Telescope Facility (IRTF)

Observatory Name: Mauna Kea Observatory

Aperture (m): 3.0

Latitude:   19.826223 /* +19 49 34.4 */

Longitude: -155.472000 /* -155 28 19.20 E */

Elevation (m): 4168

Telescope Logical Id: urn:nasa:pds:context:telescope:irtf.3m0

Notes: Instrument Host Overview
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The NASA Infrared Telescope Facility is a 3.0-meter equatorial-mount telescope located near the summit of Mauna Kea on the island of Hawaii.  Optimized for infrared observations, the NASA IRTF utilizes a f/37 Cassegrain focus that produces an image scale of 1.84 arcsec / mm over an unvignetted field-of-view approximately 2 arcminutes in diameter.


Location
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The observatory location data given here are geodetic latitude and east longitude, based on values from the Astronomical Almanac, 1989. The geocentric site radius was determined using the MERIT 1983 earth figure, equatorial radius = 6378.137 km and flattening of the reference spheroid = 1/298.257.


    Latitude:                       19.829   Degrees

    Longitude:                    -155.475   Degrees

    Earth radius at observatory:  6379.9     Kilometers

    Altitude:                     4168.1     Meters