A high-resolution echelle spectrograph for precision Doppler observations with small telescopes

Jacob Pember*, Christian Schwab, Blaise C. Kuo Tiong, Cassandra Fallscheer, Hannah Worters, David Coutts, Richard McDermid

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review


The Macquarie University campus observatory has recently undergone a significant upgrade, with a new fully- automated 0.6 m telescope and on-site facilities including an instrumentation laboratory. Here we report on the design, assembly, and first on-sky tests of a new high-resolution echelle spectrograph for the observatory. This spectrograph will be a key resource at our campus observatory, providing high fidelity measurements that will enable future research, in particular Master and PhD theses that require stellar spectroscopy or radial velocity measurements. The instrument will also form a cornerstone of the laboratory components of the undergraduate astronomy degree, and together with the new 0.6 m telescope, a key tool for project-based learning at the campus observatory. The instrument has been developed with radial velocity precision as the driving metric, and with future work on the environmental stabilisation it is expected to reach a radial velocity precision of 3 m s−1, enabling the observation of a wide range of exoplanets.
Original languageEnglish
Title of host publicationGround-based and Airborne Instrumentation for Astronomy VIII
EditorsChristopher J. Evans, Julia J. Bryant, Kentaro Motohara
Place of PublicationBellingham, Washington
Number of pages13
ISBN (Electronic) 9781510636828
ISBN (Print)9781510636811
Publication statusPublished - 2020
EventGround-based and Airborne Instrumentation for Astronomy VIII - Virtual, United States
Duration: 14 Dec 202022 Dec 2020

Publication series

NameProceedings of SPIE
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


ConferenceGround-based and Airborne Instrumentation for Astronomy VIII
CountryUnited States


  • high-resolution spectrographs
  • Doppler spectroscopy
  • radial velocity
  • exoplanets
  • small telescopes


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