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The MROI fringe tracker: Laboratory tracking with ICONN


Type

Conference Object

Change log

Authors

McCracken, TM 
Jurgenson, CA 
Young, JS 
Seneta, EB 
Buscher, DF 

Abstract

The loop is closed on ICONN, the Magdalena Ridge Observatory Interferometer fringe tracker. Results from laboratory experiments demonstrating ICONN's ability to track realistic, atmospheric-like path difference perturbations in real-time are shown. Characterizing and understanding the behavior and limits of ICONN in a controlled environment are key for reaching the goals of the MROI. The limiting factors in the experiments were found to be the light delivery system and temporary path length correction mechanism; not the on-sky components of ICONN. ICONN was capable of tracking fringes with a coherence loss below 5%; this will only improve in its final deployment.

Description

Keywords

MROI, optical interferometry, fringe tracker, fringe tracking

Journal Title

Proceedings of SPIE - The International Society for Optical Engineering

Conference Name

SPIE Astronomical Telescopes + Instrumentation

Journal ISSN

0277-786X
1996-756X

Volume Title

9146

Publisher

SPIE
Sponsorship
The Magdalena Ridge Observatory Interferometer is funded by the US Department of Transportation, the State of New Mexico, and New Mexico Tech with previous funding from the Navy Research Laboratory (NRL, agreement no. N00173-01-2-C902).