[asac] [almanews] ALMA Memo 365 Released

[Al Wootten]

ALMA Memo #365

Atmospheric Phase Stability at Chajnantor and Pampa la Bola

Bryan J. Butler and Simon J. E. Radford
National Radio Astronomy Observatory

Seiichi Sakamoto
National Astronomical Observatory of Japan

Kotaro Kohno
Nobeyama Radio Observatory

2001-Jun-06

Atmospheric phase stability has been measured at Chajnantor (e.g., Radford &
Holdaway 1998) and Pampa la Bola (e.g., Ishiguro 1998) for many years now
with Site Test Interferometers (STIs - see Ishiguro et al. 1989; Radford et
al. 1996). A preliminary analysis of these data showed Chajnantor had
smaller phase fluctuations than Pampa la Bola (Holdaway et al. 1997), but
only 6 weeks worth of data were included in that analysis. Given the more
extensive data set available now, it seems appropriate to make a more
complete comparison.


View a pdf version of ALMA Memo 365.
http://www.alma.nrao.edu/memos/html-memos/alma365/memo365.pdf

Download a ps version of ALMA Memo 365.
http://www.alma.nrao.edu/memos/html-memos/alma365/memo365.ps


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