iSHELL: a construction, assembly and testing

John Rayner; Alan Tokunaga; Dan Jaffe; Morgan Bonnet; Greg Ching; Mike Connelley; Dan Kokubun; Charles Lockhart; Eric Warmbier

doi:10.1117/12.2232064

9 August 2016 iSHELL: a construction, assembly and testing

John Rayner, Alan Tokunaga, Dan Jaffe, Morgan Bonnet, Greg Ching, Mike Connelley, Dan Kokubun, Charles Lockhart, Eric Warmbier

Author Affiliations +

Proceedings Volume 9908, Ground-based and Airborne Instrumentation for Astronomy VI; 990884 (2016) https://doi.org/10.1117/12.2232064
Event: SPIE Astronomical Telescopes + Instrumentation, 2016, Edinburgh, United Kingdom

Abstract

iSHELL is 1.10-5.3 μm high spectral resolution spectrograph being built for the NASA Infrared Telescope Facility on Maunakea, Hawaii. Dispersion is accomplished with a silicon immersion grating in order to keep the instrument small enough to be mounted at the Cassegrain focus of the telescope. The white pupil spectrograph produces resolving powers of up to R=75,000. Cross-dispersing gratings mounted in a tilt-able mechanism allow observers to select different wavelength ranges and, in combination with a slit wheel and Dekker mechanism, slit lengths ranging from 5ʺ″ to 25ʺ″. One Teledyne 2048x2048 Hawaii 2RG array is used in the spectrograph, and one Raytheon 512x512 Aladdin 2 array is used in a slit viewer for object acquisition and guiding. First light is expected in mid-2016. In this paper we discuss details of the construction, assembly and laboratory testing.

Citation Download Citation

John Rayner, Alan Tokunaga, Dan Jaffe, Morgan Bonnet, Greg Ching, Mike Connelley, Dan Kokubun, Charles Lockhart, and Eric Warmbier "iSHELL: a construction, assembly and testing", Proc. SPIE 9908, Ground-based and Airborne Instrumentation for Astronomy VI, 990884 (9 August 2016); https://doi.org/10.1117/12.2232064

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