Return to Memolist

ALMA Memo #300

Reducing Atmospheric Noise in Single Dish observations with ALMA


Robert Lucas
11 April 2000

We propose a method that takes advantage of the large variation of atmospheric transmission across the 8 GHz receiver bandpass of ALMA, at some sky frequencies, to cancel the time variations of atmospheric water emission that otherwise limit single dish continuum emission mapping of extended sources. This technique could be useful for on-the-fly maps of extended sources for which the use of a focal plane chopper or a nutating subreflector is not practical due to limited beam throw.


From here, you can:

View a PDF version of ALMA Memo #300.

Download a 94 kB gzipped postscript version of ALMA Memo #300 from

here


Last modified: April 12, 2000

kweather@nrao.edu