Share Email Print
cover

Proceedings Paper

Improving the pointing and tracking performance of the Keck telescopes
Author(s): Shui Hung Kwok; Tomas Krasuski; Jim Lyke; Jeff Mader; Kevin McCann; Kevin Tsubota
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

Pointing and tracking performance is one of the key metrics that characterize a telescope's overall efficiency. The pointing performance of the Keck telescopes, which use rotary friction encoders to provide position feedback to the control system, has been surpassed by newer large telescopes with more precise encoder systems. While poor tracking can be compensated with guiding, poor blind pointing performance can lead to loss of observing time. In this paper we present a history of the efforts to reduce the impact of poor pointing, as well as the improvements achieved after the installation of new tape encoders. We will discuss the calibration and testing methods and the tools for monitoring and maintaining the desired pointing performance. A comparative analysis of the pointing performance before and after the telescope control system upgrade will also be presented.

Paper Details

Date Published: 8 August 2016
PDF: 16 pages
Proc. SPIE 9913, Software and Cyberinfrastructure for Astronomy IV, 991305 (8 August 2016); doi: 10.1117/12.2231825
Show Author Affiliations
Shui Hung Kwok, W. M. Keck Observatory (United States)
Tomas Krasuski, W. M. Keck Observatory (United States)
Jim Lyke, W. M. Keck Observatory (United States)
Jeff Mader, W. M. Keck Observatory (United States)
Kevin McCann, W. M. Keck Observatory (United States)
Kevin Tsubota, W. M. Keck Observatory (United States)


Published in SPIE Proceedings Vol. 9913:
Software and Cyberinfrastructure for Astronomy IV
Gianluca Chiozzi; Juan C. Guzman, Editor(s)

© SPIE. Terms of Use
Back to Top