Final imaging and analysis of the scientific data generally is the responsibility of the observer, although considerable assistance is available from NRAO. NRAO also will provide an imaging service for novice users from U.S. institutions, though it is generally desirable for the user to visit NRAO to take advantage of this service.

Within AIPS, task IMAGR is typically used for imaging, with CALIB used for self-calibration cycles. See the AIPS Cookbook for details. The DIFMAP package, developed at Caltech, also can be used for data editing, self-calibration, and imaging.

Introduction Why use the VLBA? How to propose Proposal selection: refereeing and observing allocation Schedule preparation Observations, correlation, data validation, and distribution Calibration Final imaging and analysis Staff collaboration, financial support for data reduction, scientific results and publications, graduate student programs

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