Translator Disclaimer
Paper
16 July 2010 Photon collider: a four-channel autoguider solution
Author Affiliations +
Abstract
The "Photon Collider" uses a compact array of four off axis autoguider cameras positioned with independent filtering and focus. The photon collider is two way symmetric and robustly mounted with the off axis light crossing the science field which allows the compact single frame construction to have extremely small relative deflections between guide and science CCDs. The photon collider provides four independent guiding signals with a total of 15 square arc minutes of sky coverage. These signals allow for simultaneous altitude, azimuth, field rotation and focus guiding. Guide cameras read out without exposure overhead increasing the tracking cadence. The independent focus allows the photon collider to maintain in focus guide stars when the main science camera is taking defocused exposures as well as track for telescope focus changes. Independent filters allow auto guiding in the science camera wavelength bandpass. The four cameras are controlled with a custom web services interface from a single Linux based industrial PC, and the autoguider mechanism and telemetry is built around a uCLinux based Analog Devices BlackFin embedded microprocessor. Off axis light is corrected with a custom meniscus correcting lens. Guide CCDs are cooled with ethylene glycol with an advanced leak detection system. The photon collider was built for use on Las Cumbres Observatory's 2 meter Faulks telescopes and currently used to guide the alt-az mount.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
John C. Hygelund, Rachel Haynes, Ben Burleson, and Benjamin J. Fulton "Photon collider: a four-channel autoguider solution", Proc. SPIE 7742, High Energy, Optical, and Infrared Detectors for Astronomy IV, 77421F (16 July 2010); https://doi.org/10.1117/12.857761
PROCEEDINGS
15 PAGES


SHARE
Advertisement
Advertisement
RELATED CONTENT

PAU camera: detectors characterization
Proceedings of SPIE (September 25 2012)
A smart fast camera
Proceedings of SPIE (September 30 2004)
Design of a day/night star camera system
Proceedings of SPIE (October 05 1999)

Back to Top