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Next: The Design in Brief Up: The Dwingeloo `UVCI' Design AIPS++ Implementation Note 181 Previous: List of Figures

Introduction

An effort to advance the UV-plane Calibration and Imaging (UVCI) design and implementation for AIPS++ has taken place in the period January-April 1995, hosted by the Netherlands Foundation for Research in Astronomy (NFRA) in Dwingeloo, the Netherlands.

This design and implementation effort was focussed exclusively on classes required for syntheses radiotelescopes. The plan was to do this work in a number of phases:

1.: Take the previous design, described in [Gle94], and solve known problems, and attempt to anticipate gross problems.
2.: Take this design and implement classes required to implement the self-calibration loop for both real and simulated data.
3.: Choose a hard(er) problem (Mosaicing, for example), and attempt to correct the design for any difficulties which arise.
4.: Implement that design.

In general, we felt that the AIPS++ project has spent too much time trying to solve every conceivable problem, leading to stagnation. Our strategy was to flesh out the design framework by concentrating on specific problems. Of course we avoided design decisions which were certain to cause later difficulties.

Events have overtaken this process. The AIPS++ project underwent a significant reorganization on April 1, 1995. The `UVCI' effort was terminated after its second phase, and the continuation of the AIPS++ synthesis radiotelescopes design and implementation shall take place under different circumstances.

This document describes our design as it existed at the end of Phase 2. The reader should understand that while we are generally satisfied with what we have produced, we have not subjected it to the rigors of more difficult problems as we had intended.

The code for the classes described herein has been checked into the system (initially into the trial package). Subsequent design discussions should possibly be written in a hypertext form to take advantage of the detailed information which is documented in the interface sections of the source code.

As this is a report on a work-in-progress, readers of this document are expected to be generally familiar with the previous design.

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