[asac] [almanews] ALMA Memo 386 and 387 Released

[Stacy Oliver]

ALMA Memo #386

ALMA+ACA Simulation Tool

J. Pety (IRAM), F. Gueth (IRAM), S. Guilloteau (IRAM)

2001-08-13

This memo describes the February 2001 version of the ALMA+ACA simulation
tool that has been developed and implemented in the GILDAS package. It was
used to compute the simulations presented in the ALMA memo 387. This
simulation tool includes the following capabilities: single-dish
observations, ACA observations, ALMA observations, pointing errors, thermal
and phase noise, multi-configuration, mosaic simulation, CLEAN-based
deconvolution. A deconvolution method allowing us to reduce an heterogeneous
dataset (such as observations from ALMA+ACA) has been developed. The
simulator is controled via a simple window interface; a pipeline mode is
also available.

View a pdf version of ALMA Memo 386.
	http://www.alma.nrao.edu/memos/html-memos/alma386/memo386.pdf
Download a compressed ps version of ALMA Memo 386.
	http://www.alma.nrao.edu/memos/html-memos/alma386/memo386.ps.gz

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ALMA Memo #387

ALMA+ACA Simulation Results

J. Pety (IRAM), F. Gueth (IRAM), S. Guilloteau (IRAM)

2001-08-13

This memo describes the simulation results that were presented at the ALMA
Configuration Preliminary Design Review, held at IRAM, Grenoble,February
26-27th 2001. A description of the simulation tool can be found in the ALMA
memo 386. The aim of these simulations was to properly assess the impact of
the proposed ALMA Compact Array (ACA) on the imaging capabilities of the
combined array. For that purpose, it is necessary to perform
realisticsimulations, including noise and pointing errors. The simulations
presented in this memo show that adding the ACA observations does improve
the image fidelity, as compared to the ALMA+Single-dish case.  A possible
operation scheme of the ALMA+ACA+Single-dish observations is proposed.

View a pdf version of ALMA Memo 387.
	http://www.alma.nrao.edu/memos/html-memos/alma387/memo387.pdf
Download a compressed ps version of ALMA Memo 387.
	http://www.alma.nrao.edu/memos/html-memos/alma387/memo387.ps.gz

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