A fiber feed system for a multiple object Doppler instrument at Sloan Telescope

Xiaoke Wan; Jian Ge; Pengcheng Guo; Bo Zhao; Lakshminarayan Hariharan; Daniel McDavitt

doi:10.1117/12.670858

30 June 2006 A fiber feed system for a multiple object Doppler instrument at Sloan Telescope

Xiaoke Wan, Jian Ge, Pengcheng Guo, Bo Zhao, Lakshminarayan Hariharan, Daniel McDavitt

Proceedings Volume 6269, Ground-based and Airborne Instrumentation for Astronomy; 62692T (2006) https://doi.org/10.1117/12.670858
Event: SPIE Astronomical Telescopes + Instrumentation, 2006, Orlando, Florida , United States

Abstract

A fiber feed system has been developed to allow a new generation multiple object Doppler instrument, called the WM Keck Exoplanet Tracker, simultaneously tracking 59 stars for high precision radial velocity measurements for planet detection, and switching among over 500 targets per night. The system includes 27 plug fiber bundles and 3 instrument fiber bundles, and each fiber bundle includes 22 fibers. Individual fibers of a plug fiber bundle are plugged to a plate to receive star lights, and then they are grouped together to form a compact 22-fiber connector. An instrument fiber bundle with a matching fiber bundle connector can connect and disconnect with the plug fiber bundle. The 45 m long instrument fiber bundles deliver the light from the telescope to an environment controlled instrument room in distance. We characterizes the light loses including the position and pointing error of plug connectors, the fiber end reflection, fiber misalignment at the mating connectors, focal ratio degradation and fiber absorption through the long fiber link. All fiber bundles are tested and average total throughput of 61% is achieved.

Citation Download Citation

Xiaoke Wan, Jian Ge, Pengcheng Guo, Bo Zhao, Lakshminarayan Hariharan, and Daniel McDavitt "A fiber feed system for a multiple object Doppler instrument at Sloan Telescope", Proc. SPIE 6269, Ground-based and Airborne Instrumentation for Astronomy, 62692T (30 June 2006); https://doi.org/10.1117/12.670858

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available