Share Email Print

Proceedings Paper

DRAMA: an environment for distributed instrumentation software
Author(s): Jeremy A. Bailey; Tony J. Farrell; Keith Shortridge
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

The DRAMA software environment has been developed at the Anglo-Australian Observatory to facilitate the development of instrument and telescope control systems. It is designed to run on a distributed system consisting of machines running a variety of operating systems including UNIX, VAX/VMS, and VxWorks. DRAMA builds on ideas from the ADAM system in use at a number of observatories. It is based on the concept of a `task' which is a software object which responds to messages requesting it to perform actions. The message system provides network transport using TCP/IP as well as optimized local transport for each machine. Messages are encoded using a self-defining hierarchical data system (SDS) which allows complex data structures while transparently handling differences in machine architecture. Tasks are coded using a standard event driven structure which can be used for applications ranging from low level real-time systems to user interfaces. The latter are developed using the Tcl/Tk package incorporated into DRAMA tasks.

Paper Details

Date Published: 8 June 1995
PDF: 7 pages
Proc. SPIE 2479, Telescope Control Systems, (8 June 1995); doi: 10.1117/12.211466
Show Author Affiliations
Jeremy A. Bailey, Anglo-Australian Observatory (Australia)
Tony J. Farrell, Anglo-Australian Observatory (Australia)
Keith Shortridge, Anglo-Australian Observatory (Australia)

Published in SPIE Proceedings Vol. 2479:
Telescope Control Systems
Patrick T. Wallace, Editor(s)

© SPIE. Terms of Use
Back to Top