Development of immersion grating for mid-infrared high-dispersion spectrograph for the 8.2-m Subaru telescope

Noboru Ebizuka; Shin-ya Morita; Tomoyuki Shimizu; Yutaka Yamagata; Hitoshi Omori; Moriaki Wakaki; Hideomi Kobayashi; Hitoshi Tokoro; Yasuhiro Hirahara

doi:10.1117/12.457402

30 January 2003 Development of immersion grating for mid-infrared high dispersion spectrograph for the 8.2m Subaru Telescope

Noboru Ebizuka, Shin-ya Morita, Tomoyuki Shimizu, Yutaka Yamagata, Hitoshi Omori, Moriaki Wakaki, Hideomi Kobayashi, Hitoshi Tokoro, Yasuhiro Hirahara

Author Affiliations +

Proceedings Volume 4842, Specialized Optical Developments in Astronomy; (2003) https://doi.org/10.1117/12.457402
Event: Astronomical Telescopes and Instrumentation, 2002, Waikoloa, Hawai'i, United States

Abstract

The mid-infrared high dispersion spectrograph (IRHS; tentative name) with a resolving power of 200,000 at 10 μm is a candidate of the second-generation instrument for the 8.2m Subaru Telescope. A germanium immersion grating will be employed as a dispersing element for this instrument. Germanium immersion gratings for the prototype IRHS were successfully fabricated by using a nano precision 3D profile grinding/turning machine and ELID grinding method on diamond machining. As a result, the fabricated gratings observed to have grooves with ideal saw-tooth shape, smooth surface and acceptable wave front error of a diffraction beam at 10μm. In the present paper, we characterized the performance of the developed immersion gratings.

Citation Download Citation

Noboru Ebizuka, Shin-ya Morita, Tomoyuki Shimizu, Yutaka Yamagata, Hitoshi Omori, Moriaki Wakaki, Hideomi Kobayashi, Hitoshi Tokoro, and Yasuhiro Hirahara "Development of immersion grating for mid-infrared high dispersion spectrograph for the 8.2m Subaru Telescope", Proc. SPIE 4842, Specialized Optical Developments in Astronomy, (30 January 2003); https://doi.org/10.1117/12.457402

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