Submillimeter transparency

For several years, the NRAO/CMU Submillimeter tipping radiometers have operated at several sites of interest.

Caveats

These data are results from site characterization measurements by Caltech, NRAO, CMU, and others. These data are available for use by other researchers, but please note:

Not all links are active. Some files are preliminary and may be replaced without notice.
Some files may contain "bad" data when, for example, instruments were malfunctioning. Although we have tried to edit out these data, use the files at your own risk.
Please do not refer to these data in any publication, etc., without contacting us first.

Simon Radford

Cerro Chajnantor (CCAT), Chile

2006 May to present
At CCAT candidate site, 50 m below and 200 m ENE of summit
350 μm and other filters
5612 m altitude

Chajnantor plateau (CBI), Chile

2005 June to present
On CBI container, 1 km west of ALMA containers
350 μm and other filters
5050 m altitude

Chajnantor plateau (ALMA), Chile

1997 October to 2005 June
On NRAO/ALMA container, close to 225 GHz tipper
350 μm and other filters
5050 m altitude

Mauna Kea

1997 December to present
On CSO outbuilding, close to 225 GHz tipper
350 μm filter
4070 m altitude

South Pole

1998 January to present
On AST/RO building: 1998 January to 2005 November
On dark sector lab (DSL): 2006 January to present
350 μm filter
2850 m altitude

Sairecabur, Chile

2001 December to 2004 May
On SAO container, close to FTS
350 μm filter
5500 m altitude

Cordon Honar, Chile

2005 May to June
On ridge, below and ENE of summit
Several km south of ALMA containers
350 μm filter
5310 m altitude

Data formats: ascii text, details

Graphics format: acrobat (pdf)

Last modified 2006 September 21

Simon Radford