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NASA Infrared Telescope Facility (IRTF)
Institute for Astronomy, University of Hawaii |
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Telescope Pointing limits and GPS locations
Telescope Pointing Limits
| IRTF | |
|---|---|
| Telescope Limits Declination | The Hour Angle Limits |
| +67:00:00 -55:00:00 |
+/- 5:04:47 |
TCS has a elevation limit of 15 degrees.
Click on thumbnails to view the Air Mass/Elevation vs. Telescope Position graph:
Coordinates of Mauna Kea Telescopes
The following coordinates were determined from an aerial survey made on September 25, 1996.
| Telescope | NAD 83 | Old Hawaiian | Altitude | ||
|---|---|---|---|---|---|
| Latitude (North) | Longitude (West) | North | East | (feet) | |
| 0.6-m | 19 49 17.81149 | 155 28 15.46587 | 359995.495 | 509025.550 | 13734.67 |
| 2.2-m | 19 49 22.76784 | 155 28 09.96073 | 360495.640 | 509551.095 | 13824.00 |
| CFHT | 19 49 30.90648 | 155 28 07.95258 | 361316.785 | 509742.720 | 13793.00 |
| IRTF | 19 49 34.38594 | 155 28 19.19564 | 361667.615 | 508669.260 | 13674.76 |
| UKIRT | 19 49 20.75334 | 155 28 13.17630 | 360292.335 | 509244.110 | 13774.60 |
| JCMT | 19 49 22.10741 | 155 28 37.20394 | 360428.610 | 506950.115 | |
| CSO | 19 49 20.77658 | 155 28 31.78945 | 360294.405 | 507467.055 | |
| Keck 1 | 19 49 33.40757 | 155 28 28.98665 | 361568.775 | 507734.525 | 13646.92 |
| Keck 2 | 19 49 35.61788 | 155 28 27.24268 | 361791.795 | 507901.000 | 13646.92 |
| Subaru | 19 49 31.81425 | 155 28 33.66719 | 361407.970 | 507287.690 | 13658.14 |
| Gemini | 19 49 25.68521 | 155 28 08.56831 | 360790.000 | 509684.000 | 13823.62 |
Typical grid convergence for the Old Hawaiian coordinates is 0 00 30.
Typical scale factor for the Old Hawaiian coordinates is 0.99996675.