http://cso.caltech.edu/wiki/ 2026-09-14T14:50:28+00:00 http://cso.caltech.edu/wiki/ http://cso.caltech.edu/wiki/lib/tpl/cso/images/favicon.ico text/html 2023-06-15T21:19:55+00:00 http://cso.caltech.edu/wiki/cso/telescope/optics?rev=1686863995&do=diff CSO Optics Caltech Professors Robert Leighton and Tom Phillips measuring panel curvature. (Photo circa 1981.) The CSO telescope was designed by Caltech Prof. Robert Leighton. In all, seven of these Leighton antennas were built. They were fabricated in the Synchrotron Laboratory on the Caltech campus. This building, originally used for figuring and polishing the mirror of the Palomar 5 m telescope, has a stable temperature environment. The fourth antenna produced was erected on Mauna Kea at … text/html 2014-03-11T01:11:01+00:00 http://cso.caltech.edu/wiki/cso/telescope/orrery?rev=1394500261&do=diff Orrery The orrery provides a graphical indication of source positions in the sky. Pop up windows provide some flux and other information about standard sources. The orrery will read standard CSO source Catalogs. Connect to view the orrery in the UIP desktop. mycomp> text/html 2014-08-26T21:10:10+00:00 http://cso.caltech.edu/wiki/cso/telescope/secondary?rev=1409087410&do=diff Secondary mirror The CSO has a wobbling (chopping) secondary mirror to switch the beam back and forth during observations of compact sources. The secondary controller combines an digital servo loop with an automatic tuning algorithm. The mirror position is displayed in a window on the remote observing desktop. text/html 2014-07-31T06:54:53+00:00 http://cso.caltech.edu/wiki/cso/telescope/shutter?rev=1406789693&do=diff Shutter The dome shutter must be opened prior to observing and should be closed to protect the telescope during the day or during inclement weather. Remote observers may open the shutter no earlier than one hour after sunset and should close the shutter one hour before sunrise. Fully opening or closing the shutter takes about 10 min. When operating the shutter, please watch both the antenna status display and the text/html 2014-08-27T02:26:04+00:00 http://cso.caltech.edu/wiki/cso/telescope/status?rev=1409106364&do=diff Telescope Status The telescope status monitor is displayed on a monitor in the control room and on some of the remote observing desktops. Some fields change depending on telescope activity or which instrument is active. Example CSO TELESCOPE STATUS PAGE 1 DATE AUG/26/2014 DOY 238 MJD 56895 AAZ +101.1994 AZA +34.9396 UTC 20:46:39.6 DAT 35 DUT -0.312 RAZ +101.1988 RZA +34.9400 LST 08:44:49.8 … text/html 2014-08-12T02:17:29+00:00 http://cso.caltech.edu/wiki/cso/telescope/telescope?rev=1407809849&do=diff Telescope The CSO consists of a 10.4 m diameter Leighton telescope housed in a compact dome located at 4140 m altitude near the summit of Mauna Kea, Hawaii. Instruments are mounted at the Cassegrain and Nasmyth foci for spectroscopy and continuum imaging at wavelengths between 2 mm and 350 μm. Observations are carried out at night. The median zenith precipitable water vapor (PWV) is about 2 mm. Short wavelength (350 μm) observations are possible about 25% of the time, when the PWV is below 1 mm…