SPECTRE: a 0.4-4.2-micron IFU Spectrograph for the NASA Infrared Telescope Facility

Michael S. Connelley; John T. Rayner; Charles Lockhart; Theodora Bowe; Dan Kokubun; Adwin Boogert

doi:10.1117/12.2629587

29 August 2022 SPECTRE: a 0.4-4.2-micron IFU Spectrograph for the NASA Infrared Telescope Facility

Michael S. Connelley, John T. Rayner, Charles Lockhart, Theodora Bowe, Dan Kokubun, Adwin Boogert

Proceedings Volume 12184, Ground-based and Airborne Instrumentation for Astronomy IX; 121847X (2022) https://doi.org/10.1117/12.2629587
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Abstract

SPECTRE is a proposed 0.4-4.2 µm low-resolution spectrograph being developed for the NASA Infrared Telescope Facility. Dispersion is accomplished using prisms to optimize throughput, resulting in a mean resolving power of R=160. SPECTRE has an image-slicer integral field unit with a 7.2′′ field of view to remove slit losses, reduce mechanical complexity, and enable precision spectrophotometry. Dichroics are used to divide the light into three spectroscopic channels, each with optimized optics and its own detector. We will use a 2K frame transfer CCD for the optical channel, and an H2RG in each of the two infrared channels. SPECTRE is a single mode instrument: there are no moving optics and the spectral format is fixed, making for a simple and rigid instrument. Guiding will be done by a co-mounted visible light camera with a 3′ field of view.

Citation Download Citation

Michael S. Connelley, John T. Rayner, Charles Lockhart, Theodora Bowe, Dan Kokubun, and Adwin Boogert "SPECTRE: a 0.4-4.2-micron IFU Spectrograph for the NASA Infrared Telescope Facility", Proc. SPIE 12184, Ground-based and Airborne Instrumentation for Astronomy IX, 121847X (29 August 2022); https://doi.org/10.1117/12.2629587

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