Atmospheric turbulence characterisation with Differential Image Motion Monitor

The team is currently commissioning a SCIDAR system to monitor the turbulence above Mount Stromlo. The knowledge of the turbulence – its typical strength, evolution speed, vertical distribution and time-dependent characteristics – is critical for estimating how the adaptive optics systems will work and how to optimise their performance. The successful candidate will join the site monitoring efforts by starting the operations of an alternative turbulence monitoring instrument – Differential Image Motion Monitor (DIMM), which is an instrument able to measure turbulence strength, but not its distribution. The project will include commissioning a DIMM instrument currently available at Mount Stromlo, performing data analysing, doing a cross-check with data from a simultaneously used SCIDAR instrument and studying the prospects of having the DIMM operated in an automated way.

For more information about this potential research topic or activity, or to discuss any related research area, please contact the supervisor.

Relevant publications

  • Korkiakoski, Visa, et al. "Site characterisation at Mount Stromlo: the first results." AO4ELT, 2017.

  • Tokovinin, A., and V. Kornilov. "Accurate seeing measurements with MASS and DIMM." Monthly Notices of the Royal Astronomical Society 381.3 (2007): 1179-1189.