Veloce Rosso: Australia's new precision radial velocity spectrograph
Abstract
Veloce is an ultra-stable fibre-fed R4 echelle spectrograph for the 3.9 m Anglo-Australian Telescope. The first channel to be commissioned, Veloce 'Rosso', utilises multiple low-cost design innovations to obtain Doppler velocities for Sun-like and M-dwarf stars at <1 m/s precision. The spectrograph has an asymmetric white-pupil format with a 100-mm beam diameter, delivering R>75,000 spectra over a 580-950 nm range for the Rosso channel. Simultaneous calibration is provided by a single-mode pulsed laser frequency comb in tandem with a traditional arc lamp. A bundle of 19 object fibres provides a 2.4" field of view for full sampling of stellar targets from the AAT site. Veloce is housed in dual environmental enclosures that maintain positive air pressure at a stability of +/-0.3 mbar, with a thermal stability of +/-0.01 K on the optical bench. We present a technical overview and early performance data from Australia's next major spectroscopic machine.
Keywords
Cite
@article{arxiv.1807.01938,
title = {Veloce Rosso: Australia's new precision radial velocity spectrograph},
author = {James Gilbert and Christoph Bergmann and Gabe Bloxham and Robert Boz and Robert Brookfield and Tom Carkic and Brad Carter and Scott Case and Vladimir Churilov and Michael Ellis and Gaston Gausachs and Luke Gers and Doug Gray and Nicholas Herrald and Michael Ireland and Damien Jones and Yevgen Kripak and Jon Lawrence and Ellie O'Brien and Ian Price and Matthew Robertson and Christian Schwab and Chris Tinney and Annino Vaccarella and Colin Vest and Duncan Wright and Ross Zhelem},
journal= {arXiv preprint arXiv:1807.01938},
year = {2018}
}
Comments
Submitted to SPIE 10702