[asac] [almanews] ALMA Memo No. 379, 380, and 382 Released

[Stacy Oliver]

ALMA Memo #379
SUMMER CLIMATE OVER CHAJNANTOR

Ricardo Bustos

2001-JUL-03

A description of the main characteristics of the Bolivian High and what is
now called the South American Monsoon System (SAMS) is presented. The water
origin for the Altiplano can be inferred from both descriptions, being this
supply mostly from the Amazon basin. From this premise, an analysis of
ground weather station data and radiometers data from Chajnantor was
performed.

View a pdf version of ALMA Memo 379.
	http://www.alma.nrao.edu/memos/html-memos/alma379/memo379.pdf


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ALMA Memo #380

The Correlator at the OSF?

Bryan Anderson and Roshene McCool
University of Manchester, Jodrell Bank Observatory

2001-07-02

This document is intended to provide some costings which could influence the
location of the correlator in the final ALMA system. It discusses some
design details but it does not constitute a final design. It provides a
snapshot with current, small-quantity prices of components which suppliers
claim to be be available and deliverable. Some components which would
improve the design do not seem to be available despite much advertising.
Some of the figures have come from distributors in the UK where
traditionally there has been a tendency to convert US $ prices into £
Sterling by changing the symbol but not the number. The costings are broadly
indicative but will not necessarily be accurate in detail. It is hoped that
the other parts of the cost trade offs will tip the scales in favour of a
minimum-cost solution.

View a pdf version of ALMA Memo 380.
	http://www.alma.nrao.edu/memos/html-memos/alma380/memo380.pdf

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ALMA Memo #382

MM-VLBI with ALMA

Melvyn Wright(Radio Astronomy laboratory, University of California,
Berkeley),
Geoff Bower(Radio Astronomy laboratory, University of California, Berkeley),
Don Backer(Astronomy department, University of California, Berkeley),
Alan Whitney( Haystack Observatory)

2001/06/27

Keywords: VLBI, phased array, Polarization, recording technology,
correlators
This memo reviews the requirements for using the ALMA array as a part of a
global VLBI array at millimeter wavelengths. ALMA can be outfitted for VLBI
at modest cost and should be planned with this capability in mind, as it may
be more difficult to retrofit at a later date. The essential features
required in the ALMA design are discussed.


View a pdf version of ALMA Memo 382.
	http://www.alma.nrao.edu/memos/html-memos/alma382/memo382.pdf


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