Optics for a volume holographic grating spectrograph for the Southern Astrophysical Research (SOAR) Telescope

J. Christopher Clemens; Harland W. Epps; Scott Seagroves

doi:10.1117/12.395469

16 August 2000 Optics for a volume holographic grating spectrograph for the Southern Astrophysical Research (SOAR) Telescope

J. Christopher Clemens, Harland W. Epps, Scott Seagroves

Author Affiliations +

Proceedings Volume 4008, Optical and IR Telescope Instrumentation and Detectors; (2000) https://doi.org/10.1117/12.395469
Event: Astronomical Telescopes and Instrumentation, 2000, Munich, Germany

Abstract

We describe a novel optical design for a low-resolution imaging spectrograph that incorprates volume phase holographic (VPH) gratings. This spectrograph will provide imaging over a 5 foot square field of view, and single or multi-object spectroscopy with resolutions between 1000 and 8000. Our design choices have been dominated by a desire to preserve the superb image quality the SOAR telescope is expected to deliver, and to maximize throughput over the wavelength range of 320 to 850 nm. The resulting design is unusual in two respects: the angle between the collimated beam and camera optical axis is mechanically variable to exploit the efficiency advantage of volume holographic gratings, and all the optical elements are refracting, to maintain high throughput in the UV. In addition to the pre- construction collimator and camera design for the spectrograph, we also present our evaluation of sample volume phase holographic gratings to illustrate the advantages and difficulties they present for astronomical spectroscopy.

Citation Download Citation

J. Christopher Clemens, Harland W. Epps, and Scott Seagroves "Optics for a volume holographic grating spectrograph for the Southern Astrophysical Research (SOAR) Telescope", Proc. SPIE 4008, Optical and IR Telescope Instrumentation and Detectors, (16 August 2000); https://doi.org/10.1117/12.395469

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