Author

Tim Butterley

results may include different authors with the same name

5 papers

Demonstrating 24-hour continuous vertical monitoring of atmospheric optical turbulence

We report what is believed to be the first example of fully continuous, 24-hour vertical monitoring of atmospheric optical turbulence. This is achieved using a novel instrument, the 24-hour Shack-Hartmann Image Motion Monitor (24hSHIMM).…

Instrumentation and Methods for Astrophysics · Physics 2023-04-18 Ryan Griffiths , James Osborn , Ollie Farley , Tim Butterley , Matthew J. Townson , Richard Wilson

SHIMM: A Versatile Seeing Monitor for Astronomy

Characterisation of atmospheric optical turbulence is crucial for the design and operation of modern ground-based optical telescopes. In particular, the effective application of adaptive optics correction on large and extremely large…

Instrumentation and Methods for Astrophysics · Physics 2023-03-02 Saavidra Perera , Richard W. Wilson , Tim Butterley , James Osborn , Ollie J. D. Farley , Douglas J. Laidlaw

The PDS 110 observing campaign - photometric and spectroscopic observations reveal eclipses are aperiodic

PDS 110 is a young disk-hosting star in the Orion OB1A association. Two dimming events of similar depth and duration were seen in 2008 (WASP) and 2011 (KELT), consistent with an object in a closed periodic orbit. In this paper we present…

Solar and Stellar Astrophysics · Physics 2019-03-13 Hugh P. Osborn , Matthew Kenworthy , Joseph E. Rodriguez , Ernst J. W. de Mooij , Grant M. Kennedy , Howard Relles , Edward Gomez , Michael Hippke , Massimo Banfi , Lorenzo Barbieri , Igor Becker , Paul Benni , Perry Berlind , Allyson Bieryla , Giacomo Bonnoli , Hubert Boussier , Stephen Brincat , John Briol , Matthew Burleigh , Tim Butterley , Michael L. Calkins , Paul Chote , Simona Ciceri , Marc Deldem , Vik S. Dhillon , Eric Dose , Frank Dubois , Shawn Dvorak , Gilbert A. Esquerdo , Daniel Evans , Stephane Ferratfiat Dagot Berangez , Stephen Fossey , Maximilian N. Güenther , John Hall , Josch Hambsch , Enrique Herrero Casas , Kevin Hills , Robert James , Stella Kafka , Thomas L. Killestein , Clifford Kotnik , David W. Latham , Damien Lemay , Pablo Lewin , Stuart Littlefair , Claudio Lopresti , Matthias Mallonn , Luigi Mancini , Alessandro Marchini , James J. McCormac , Gabriel Murawski , Gordon Myers , Ricardo Papini , Velimir Popov , Ulisse Quadri , Samuel N. Quinn , Liam Raynard , Luca Rizzuti , James Roa , Jeff Robertson , Fabio Salvaggio , Alexander Scholz , Rafael Sfair , Alexis M. S. Smith , John Southworth , TG Tan , Sigfried Vanaverbeke , Elizabeth O. Waagen , Christopher Watson , Richard West , P. J. Wheatley , Richard W. Wilson , Othon C. Winter , George Zhou

Hunting For Eclipses: High Speed Observations of Cataclysmic Variables

We present new time-resolved photometry of 74 cataclysmic variables (CVs), 47 of which are eclipsing. 13 of these eclipsing systems are newly discovered. For all 47 eclipsing systems we show high cadence (1-20 seconds) light curves obtained…

Solar and Stellar Astrophysics · Physics 2017-01-11 Liam K Hardy , Martin J McAllister , Vik S Dhillon , Stuart P Littlefair , Madelon C P Bours , Elme Breedt , Tim Butterley , Anurak Chakpor , Puji Irawati , Paul Kerry , Tom R Marsh , Steven G Parsons , Chris D J Savoury , Richard W Wilson , Patrick A Woudt

Optical turbulence characterization at the SAAO Sutherland site

We present results from the first year of a campaign to characterize and monitor the optical turbulence profile at the SAAO Sutherland observing station in South Africa. A MASS-DIMM (MultiAperture Scintillation Sensor - Differential Image…

Instrumentation and Methods for Astrophysics · Physics 2013-10-29 Laure Catala , Steven M. Crawford , David A. H. Buckley , Tim Pickering , Richard Wilson , Tim Butterley , Harry Shepherd , Fred Marang , Patrick Matshaya , Chantal Fourie