Laser guide star upgrade of Altair at Gemini North

Maxime Boccas; Francois Rigaut; Matthieu Bec; Benjamin Irarrazaval; Eric James; Angelic Ebbers; Celine d'Orgeville; Kenny Grace; Gustavo Arriagada; Stan Karewicz; Mike Sheehan; John White; Simon Chan

doi:10.1117/12.670842

27 June 2006 Laser guide star upgrade of Altair at Gemini North

Maxime Boccas, Francois Rigaut, Matthieu Bec, Benjamin Irarrazaval, Eric James, Angelic Ebbers, Celine d'Orgeville, Kenny Grace, Gustavo Arriagada, Stan Karewicz, Mike Sheehan, John White, Simon Chan

Author Affiliations +

Proceedings Volume 6272, Advances in Adaptive Optics II; 62723L (2006) https://doi.org/10.1117/12.670842
Event: SPIE Astronomical Telescopes + Instrumentation, 2006, Orlando, Florida , United States

Abstract

Altair is the general-purpose Adaptive Optics bench installed on Gemini North that has operated successfully with Natural Guide Star (NGS) since 2003. The original design and fabrication included an additional WaveFront Sensor (WFS) to enable operation with Laser Guide Star (LGS). Altair has been recently upgraded and functional commissioning was performed between June and November 2005. The insertion of a dichroic beamsplitter in the NGS path allows to reflect the 589nm light to the LGS wavefront sensor and transmit the visible light of the NGS (or Tip-Tilt Guide star -TTGS-) to the tip-tilt-focus sensors. We will review the various modifications made for this dual operation, both in hardware and software, and describe the steps and results of the integration and testing phase on the sky.

Citation Download Citation

Maxime Boccas, Francois Rigaut, Matthieu Bec, Benjamin Irarrazaval, Eric James, Angelic Ebbers, Celine d'Orgeville, Kenny Grace, Gustavo Arriagada, Stan Karewicz, Mike Sheehan, John White, and Simon Chan "Laser guide star upgrade of Altair at Gemini North", Proc. SPIE 6272, Advances in Adaptive Optics II, 62723L (27 June 2006); https://doi.org/10.1117/12.670842

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