Telescope Reference Data

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
Telescope	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.

IRTF
Telescope Limits Declination	The Hour Angle Limits
+69:56:00 -59:00:00	+/- 5:04:47

TCS has a elevation limit of 15 degrees.
Click on thumbnails to view the Air Mass/Elevation vs. Telescope Position graph:

maintained by irtfwebmaster at ifa dot hawaii dot edu
Last modified June 7, 2012