Repairs to Jabba at Carnarvon in 2016 August

Abstract

A major leak on the water-cooling loop inside the spectrometer caused serious damage to the printed circuit boards inside the rear connections box. The dome azimuth drive had problems with a damaged gearbox output shaft. Peltiers failed in two detectors. The linear polariser failed resulting in almost zero ratio. Repairs were completed sufficiently to get the site back online and operational, but significant work is still required. The water-cooling loop can not be reactivated without major repairs to the spectrometer chassis. The data now show a strong low-frequency footprint caused by the use of a lens from a pair of polarising sun-glasses as a substitute polarising filter. A CCD-based guider monitor was used to assess the guiding performance of the mount.