Astrophysics and Space Science

, Volume 273, Issue 1, pp 217-224

First online:

Spectroscopy on Small Telescopes: The Echelle Spectrograph

  • Martin J. PorterAffiliated withPhysics Department, The University of Queensland

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In recent years there has been a trend toward the automation ofmodest sized observatories, especially those involved withphotoelectric photometry. Although undoubtedly useful, there isclearly a need for more advanced instrumentation such asspectrographs. The relatively small telescope sizes places severelimits on the choice of spectrograph configuration. A fiber-fedechelle spectrograph is arguably the most suitable design forthese applications.Presented here is a brief discussion of the design philosophy andoperating principles. Both theoretical and measured performancedata for the prototype University of Queensland EchelleSpectrograph are also presented.