@inproceedings{e9af7082e29643c39b57cb3244ec3a5c,
title = "RHEA: the ultra-compact Replicable High-resolution Exoplanet and Asteroseismology spectrograph",
abstract = "We present the opto-mechanical design and the characterization of the Replicable High-resolution Exoplanet and Asteroseismology (RHEA) spectrograph. RHEA is an ultra-compact fiber-fed echelle spectrograph designed to be used at 0.2 0.4 m class robotic telescopes where long term dedicated projects are possible. The instrument will be primarily used for radial velocity (RV) studies of low to intermediate-mass giant stars for the purpose of searching for hot Jupiters and using asteroseismology to simultaneously measure the host star parameters and de-correlate stellar pulsations. The optical design comprises a double-pass (i.e. near Littrow) configuration with prism cross-disperser and single-mode fiber (SMF) input. The spectrograph has a resolving power of R>70,000 and operates at 430670 nm with minimum order separation of similar to 180 mu m. This separation allows a 1x6 photonic lantern integration at a later stage which is currently under development. The current design is built with the aim of creating an inexpensive and replicable unit. The spectrograph is optimised for long-baseline RV observations through careful temperature stabilisation and simultaneous wavelength calibration. As a further improvement the echelle grating is housed in a vacuum chamber to maintain pressure stability. The performance of the current prototype is currently being tested on a 0.4 m telescope at the Macquarie University Observatory.",
keywords = "single-mode spectrograph, high-resolution, vacuum chamber, exoplanets, asteroseismology, NOISE",
author = "Tobias Feger and Carlos Bacigalupo and Bedding, {Timothy R.} and Joao Bento and David Coutts and Michael Ireland and Quentin Parker and Aaron Rizzuto and Izabela Spaleniak",
year = "2014",
doi = "10.1117/12.2055600",
language = "English",
series = "Proceedings of SPIE",
publisher = "SPIE",
pages = "91477I--1--91477I--12",
editor = "Ramsay, {Suzanne K.} and McLean, {Ian S.} and Hideki Takami",
booktitle = "Ground-based and airborne instrumentation for astronomy V",
address = "United States",
}