An Active Mirror Image Stabilizing Instrument System (ISIS) For Use On Mauna Kea

Laird A Thompson; Herbert R Ryerson

doi:10.1117/12.966192

9 January 1984 An Active Mirror Image Stabilizing Instrument System (ISIS) For Use On Mauna Kea

Laird A Thompson, Herbert R Ryerson

Proceedings Volume 0445, Instrumentation in Astronomy V; (1984) https://doi.org/10.1117/12.966192
Event: 1983 Astronomy Conferences, 1983, London, United Kingdom

Abstract

On nights when the seeing is at its best on Mauna Kea, the cores of images produced by the large optical telescopes (UH 2.24-m and CFHT 3.6-m) shrink to sizes < 0.5 arcsec. During these periods, the image cores show translational motion over a patch < 1 arcsec at frequencies < 30 Hz. To remove this translation motion, an Image Stabilizing Instrument System (ISIS) has been built and used on Mauna Kea. The instrument contains a microprocessor-controlled active plane mirror capable of being repositioned every 2 ms, a photon-counting guide probe, and an active shutter to remove moments of excessive image blur. We describe the instrument's design detail, discuss the optimal way to use such an instrument, and show samples of observational data taken with it.

Citation Download Citation

Laird A Thompson and Herbert R Ryerson "An Active Mirror Image Stabilizing Instrument System (ISIS) For Use On Mauna Kea", Proc. SPIE 0445, Instrumentation in Astronomy V, (9 January 1984); https://doi.org/10.1117/12.966192

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