(2014) ULTRASPEC: a high-speed imaging photometer on the 2.4-m Thai National Telescope. Monthly Notices of the Royal Astronomical Societ, Volume 444 (Number 4). pp. 3504-3516. doi:10.1093/mnras/stu1660 ISSN 0035-8711.

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Abstract

ULTRASPEC is a high-speed imaging photometer mounted permanently at one of the Nasmyth focii of the 2.4-m Thai National Telescope (TNT) on Doi Inthanon, Thailand's highest mountain. ULTRASPEC employs a 1024 × 1024 pixel frame-transfer, electron-multiplying CCD (EMCCD) in conjunction with re-imaging optics to image a field of 7.7 × 7.7 arcmin2 at (windowed) frame rates of up to ∼200 Hz. The EMCCD has two outputs – a normal output that provides a readout noise of 2.3 e− and an avalanche output that can provide essentially zero readout noise. A six-position filter wheel enables narrow-band and broad-band imaging over the wavelength range 330–1000 nm. The instrument saw first light on the TNT in 2013 November and will be used to study rapid variability in the Universe. In this paper we describe the scientific motivation behind ULTRASPEC, present an outline of its design and report on its measured performance on the TNT.

Item Type:	Journal Article
Divisions:	Faculty of Science, Engineering and Medicine > Science > Physics
Journal or Publication Title:	Monthly Notices of the Royal Astronomical Societ
Publisher:	Oxford University Press
ISSN:	0035-8711
Official Date:	11 November 2014
Dates:	Date Event 11 November 2014 Published 17 September 2014 Available 12 August 2014 Accepted 12 August 2014 Submitted
Volume:	Volume 444
Number:	Number 4
Page Range:	pp. 3504-3516
DOI:	10.1093/mnras/stu1660
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
Open Access Version:	ArXiv

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