The 2014 ALMA Long Baseline Campaign: An Overview

ALMA Partnership

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    Abstract

    A major goal of the Atacama Large Millimeter/submillimeter Array (ALMA) is to make accurate images with resolutions of tens of milliarcseconds, which at submillimeter (submm) wavelengths requires baselines up to ˜15 km. To develop and test this capability, a Long Baseline Campaign (LBC) was carried out from 2014 September to late November, culminating in end-to-end observations, calibrations, and imaging of selected Science Verification (SV) targets. This paper presents an overview of the campaign and its main results, including an investigation of the short-term coherence properties and systematic phase errors over the long baselines at the ALMA site, a summary of the
    Original languageEnglish
    Pages (from-to)L1-L11
    Number of pages11
    JournalThe Astrophysical Journal Letters
    Volume808
    Issue number1
    DOIs
    Publication statusPublished - Jul 2015

    Keywords

    • instrumentation: interferometers
    • submillimeter: general
    • techniques: high angular resolution
    • techniques: interferometric
    • telescopes

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