Share Email Print
cover

Proceedings Paper

Automated CO2 cleaning system for the SALT primary mirror
Author(s): Herman Kriel; Ockert Strydom; Charl du Plessis; Hitesh Gajjar
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

SALT developed an automated CO2 Mirror Cleaning System (MCS) for its 11 meter diameter segmented primary mirror. In this paper we report on the mechanical design of the system, the safety considerations taken into account given that the mechanism has to be lowered over the primary mirror for every cleaning cycle, the computerized control system and the CO2 installation which feeds the cleaning wand with liquid CO2. The paper also addresses the complexities experienced in providing high pressure liquid CO2 for the effective operation of the cleaning wand as well as the safety precautions implemented to ensure the safety of staff members at all times. The performance results are also presented although the system is still being optimised in a trade off between cleaning efficiency, CO2 consumption, the duration of a cleaning cycle and the cleaning frequency.

Paper Details

Date Published: 23 July 2008
PDF: 12 pages
Proc. SPIE 7018, Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation, 70181P (23 July 2008); doi: 10.1117/12.787781
Show Author Affiliations
Herman Kriel, South African Astronomical Observatory (South Africa)
Ockert Strydom, South African Astronomical Observatory (South Africa)
Charl du Plessis, South African Astronomical Observatory (South Africa)
Hitesh Gajjar, South African Astronomical Observatory (South Africa)


Published in SPIE Proceedings Vol. 7018:
Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation
Eli Atad-Ettedgui; Dietrich Lemke, Editor(s)

© SPIE. Terms of Use
Back to Top