GAOES-RV: a high-dispersion echelle spectrograph for radial velocimetry with the 3.8 m Seimei Telescope

Bun'ei Sato; Osamu Hashimoto; Masashi Omiya; Akito Tajitsu; Hideyuki Izumiura; Satoshi Honda; Kazuya Matsubayashi; Eiji Kambe; Takuya Takarada; Hiroki Harakawa; Norio Narita; Yasunori Hori; Masanobu Kunitomo; Yuya Hayashi

doi:10.1117/12.3019538

30 July 2024 GAOES-RV: a high-dispersion echelle spectrograph for radial velocimetry with the 3.8 m Seimei Telescope

Bun'ei Sato, Osamu Hashimoto, Masashi Omiya, Akito Tajitsu, Hideyuki Izumiura, Satoshi Honda, Kazuya Matsubayashi, Eiji Kambe, Takuya Takarada, Hiroki Harakawa, Norio Narita, Yasunori Hori, Masanobu Kunitomo, Yuya Hayashi

Author Affiliations +

Proceedings Volume 13096, Ground-based and Airborne Instrumentation for Astronomy X; 1309644 (2024) https://doi.org/10.1117/12.3019538
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

GAOES-RV^∗ (Gunma Astronomical Observatory Echelle Spectrograph for Radial Velocimetry) is a high-dispersion echelle spectrograph for the 3.8 m Seimei Telescope at Okayama Observatory, Kyoto University. GAOES^†, the predecessor of GAOES-RV, had been operated with the 1.5 m telescope at Gunma Astronomical Observatory until 2020, and it was refashioned and moved to the Seimei Telescope as a precision RV instrument, GAOES-RV.

A multi-mode optical fiber of GAOES-RV collects stellar light within a 2.2 arcsec diameter field-of-view (FOV) at the Nasmyth focus, and an image slicer is used at the other end of the fiber to achieve the high spectral resolution of R=65,000 for such a wide FOV. The wavelength coverage of GAOES-RV is 516–593 nm and the total throughput is ∼2.5–3%. GAOES-RV achieves a precision of about 2 m s−1 in RV measurements for a bright slowly-rotating solar-type star using an iodine absorption cell.

GAOES-RV has been in operation since July 2023, and is widely used for a variety of scientific observations, including the detection and characterization of exoplanets, stellar abundance analysis, and research on active stars.

Citation Download Citation

Bun'ei Sato, Osamu Hashimoto, Masashi Omiya, Akito Tajitsu, Hideyuki Izumiura, Satoshi Honda, Kazuya Matsubayashi, Eiji Kambe, Takuya Takarada, Hiroki Harakawa, Norio Narita, Yasunori Hori, Masanobu Kunitomo, and Yuya Hayashi "GAOES-RV: a high-dispersion echelle spectrograph for radial velocimetry with the 3.8 m Seimei Telescope", Proc. SPIE 13096, Ground-based and Airborne Instrumentation for Astronomy X, 1309644 (30 July 2024); https://doi.org/10.1117/12.3019538

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