Design of a slit mechanism for OSIRIS

Carmelo Militello; Santiago Correa; Jaime Perez; F. Javier Fuentes; Rosario M. Perez de Taoro; Jordi Cepa; Lorenzo Peraza

doi:10.1117/12.459954

7 March 2003 Design of a Slit Mechanism for OSIRIS

Carmelo Militello, Santiago Correa, Jaime Perez, F. Javier Fuentes, Rosario M. Perez de Taoro, Jordi Cepa, Lorenzo Peraza

Author Affiliations +

Proceedings Volume 4841, Instrument Design and Performance for Optical/Infrared Ground-based Telescopes; (2003) https://doi.org/10.1117/12.459954
Event: Astronomical Telescopes and Instrumentation, 2002, Waikoloa, Hawai'i, United States

Abstract

OSIRIS (Optical System for Imaging and low/intermediate-Resolution Integrated Spectroscopy) is an instrument designed to obtain images and low resolution spectra of astronomical objects in the optical domain (from 365 through 1000nm). It will be installed on Day One in the Nasmyth focus of the 10-meter Spanish GTC Telescope, although it shall be possible to install it in the Cassegrain focus as well. It is expected to be in operation at the end of 2003. The Slit Unit is an automated slit mask loader based in cam followers technology, being designed at the IAC for the OSIRIS Spectrograph. It provides a store with space for as many as 13 multislits mask and long slit mask for an unvignetted field of view of 8.53'x8.67', available at the same time for observing purposes. A two-degrees-of-freedom mechanism allows to select one of the masks, to remove it from the cassette and to position it in the focal plane with the required repeatability. The complete design of the mechanism is presented, including an analysis of the predicted performances and a 3-D model used to check the geometry and mass properties.

Citation Download Citation

Carmelo Militello, Santiago Correa, Jaime Perez, F. Javier Fuentes, Rosario M. Perez de Taoro, Jordi Cepa, and Lorenzo Peraza "Design of a Slit Mechanism for OSIRIS", Proc. SPIE 4841, Instrument Design and Performance for Optical/Infrared Ground-based Telescopes, (7 March 2003); https://doi.org/10.1117/12.459954

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