In a pioneering study published in 2012 we used the Hubble and Spitzer Space Telescopes simultaneously to measure rotational phase curves (think vertical scans) of the surface brightness of an ultracool brown dwarf.
O.R.H. helped to secure the VLT time, prepared the VLT phase II programme, performed the initial data processing, and developed the rotational light - curve — colour solution and assessment of shape and its implications.