Reference : LOTUS: a low-cost, ultraviolet spectrograph
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/201582
LOTUS: a low-cost, ultraviolet spectrograph
English
Steele, I. A. [Astrophysics Research Institute, Liverpool John Moores University, Liverpool, L3 5RF, UK]
Marchant, J. M. [Astrophysics Research Institute, Liverpool John Moores University, Liverpool, L3 5RF, UK]
Jermak, H. E. [Astrophysics Research Institute, Liverpool John Moores University, Liverpool, L3 5RF, UK]
Barnsley, R. M. [Astrophysics Research Institute, Liverpool John Moores University, Liverpool, L3 5RF, UK]
Bates, S. D. [Astrophysics Research Institute, Liverpool John Moores University, Liverpool, L3 5RF, UK]
Clay, N. R. [Astrophysics Research Institute, Liverpool John Moores University, Liverpool, L3 5RF, UK]
Fitzsimmons, A. [Astrophysics Research Centre, School of Mathematics and Physics, Queen's University Belfast, Belfast, BT7 1NN, UK]
Jehin, Emmanuel mailto [Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Origines Cosmologiques et Astrophysiques (OrCa) >]
Jones, G. [Mullard Space Science Laboratory, Department of Space & Climate Physics, University College London, London, RH5 6NT, UK]
Mottram, C. J. [Astrophysics Research Institute, Liverpool John Moores University, Liverpool, L3 5RF, UK]
Smith, R. J. [Astrophysics Research Institute, Liverpool John Moores University, Liverpool, L3 5RF, UK]
Snodgrass, C. [Planetary and Space Sciences, Department of Physical Sciences, The Open University, Milton Keynes MK7 6AA, UK]
de Val-Borro, M. [Department of Astrophysical Sciences, Princeton University, NJ 08544, USA)]
1-Aug-2016
Monthly Notices of the Royal Astronomical Society
Blackwell Publishing
460
4268-4276
Yes (verified by ORBi)
International
0035-8711
1365-2966
Oxford
United Kingdom
[en] instrumentation: spectrographs ; ultraviolet: general
[en] We describe the design, construction and commissioning of a simple, low-cost long-slit spectrograph for the Liverpool Telescope. The design is optimized for near-UV and visible wavelengths and uses all transmitting optics. It exploits the instrument focal plane field curvature to partially correct axial chromatic aberration. A stepped slit provides narrow (2.5 × 95 arcsec) and wide (5 × 25 arcsec) options that are optimized for spectral resolution and flux calibration, respectively. On sky testing shows a wavelength range of 3200-6300 Å with a peak system throughput (including detector quantum efficiency) of 15 per cent and wavelength dependent spectral resolution of R = 225-430. By repeated observations of the symbiotic emission line star AG Peg, we demonstrate the wavelength stability of the system is <2 Å rms and is limited by the positioning of the object in the slit. The spectrograph is now in routine operation monitoring the activity of comet 67P/Churyumov-Gerasimenko during its current post-perihelion apparition.
Professionals
http://hdl.handle.net/2268/201582
10.1093/mnras/stw1287
http://adsabs.harvard.edu/abs/2016MNRAS.460.4268S

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