New JCMT telescope control system

Details New JCMT telescope control system New JCMT telescope control system

May 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998spie.3351..140p&link_type=abstract

Proc. SPIE Vol. 3351, p. 140-147, Telescope Control Systems III, Hilton Lewis; Ed.

Astronomy and Astrophysics

Astronomy

Scientific paper

As part of the upgrades to our observatory control software, we have developed a replacement for the astrometric kernel and the servoing system at the James Clerk Maxwell Telescope. The new PTCS astrometric kernel operates within the DRAMA tasking system. An EPICS servo controls the antenna drives. The THI, a DRAMA task, translates demands from the kernel and sends them to the servo, and then feeds back to the kernel the current drive encoder positions and the expected time of arrival at source position. The TEL DRAMA task at the top level interfaces between the existing observation control software and the telescope-independent PTCS task. This new system is replacing components of an existing observatory a Vax platform and sent demands via GPIB to a servo on a VME platform. The new PTCS and the TKI software run on a Unix machine and communicate via the DRAMA message system to the upper layer observatory system and via Channel Access to the EPICS servo running VxWorks on the VME platform. In this paper we will review the main features of the new telescope control system, and report on progress with implementation.

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