AO4ELT5 Proceedings
Site characterisation at Mount Stromlo Observatory: the first results
Korkiakoski, Visa (Research School of Astronomy and Astrophysics, Australian National University), Grosse, Doris (Research School of Astronomy and Astrophysics, Australian National University), Thorn, Elliott (Research School of Astronomy and Astrophysics, Australian National University), Copeland, Michael (Research School of Astronomy and Astrophysics, Australian National University), Bennet, Francis (Research School of Astronomy and Astrophysics, Australian National University), Osborn, James (Department of Physics, Centre for Advanced Instrumentation, University of Durham), Munro, Josephine (Research School of Astronomy and Astrophysics, Australian National University), Piatrou, Piotr (Research School of Astronomy and Astrophysics, Australian National University), Rigaut, Francois (Research School of Astronomy and Astrophysics, Australian National University), d’Orgeville, Celine (Research School of Astronomy and Astrophysics, Australian National University)
We present the status of the site-characterisation campaign that has been started to aid the development of new adaptive optics systems at the Mount Stromlo Observatory. Our goal is to use a particularly designed stereo- SCIDAR system that uses a roof prism to separate beams from a double-star system to obtain two isolated pupil images on a single detector. Currently, the instrument is partially finished and operates as a generalised SCIDAR. The first results and their analysis are shown. We see that the instrument is working as intended: the data shows no sign of harmful artefacts and the atmospheric profiles follow expected patterns. In addition, we show a comparison of two possible methods to post-process Stereo-SCIDAR data: classical SCIDAR approach and a peak-detection based algorithm. Both algorithms agree on the broad features of the turbulence, but the latter is able to reach finer altitude resolution.
DOI: 10.26698/AO4ELT5.0112- Proceeding PDF
