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      The CAMbridge Emission Line Surveyor (CAMELS)

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          Abstract

          The CAMbridge Emission Line Surveyor (CAMELS) is a pathfinder program to demonstrate on-chip spectrometry at millimetre wavelengths. CAMELS will observe at frequencies from 103-114.7 GHz, providing 512 channels with a spectral resolution of R = 3000. In this paper we describe the science goals of CAMELS, the current system level design for the instrument and the work we are doing on the detailed designs of the individual components. In addition, we will discuss our efforts to understand the impact that the design and calibration of the filter bank on astronomical performance. The shape of the filter channels, the degree of overlap and the nature of the noise all effect how well the parameters of a spectral line can be recovered. We have developed a new and rigorous method for analysing performance, based on the concept of Fisher information. This can in be turn coupled to a detailed model of the science case, allowing design trade-offs to be properly investigated.

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          Author and article information

          Journal
          17 January 2014
          Article
          1401.4395
          9faa3d71-7231-4a13-8b24-fa783843a8ab

          http://arxiv.org/licenses/nonexclusive-distrib/1.0/

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          Submitted to the proceedings of the 24th International Symposium on Space Terahertz Technology (ISSTT), held in Groningen, The Netherlands, April 8-10 2013
          astro-ph.IM

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