EMIR Detector Data Acquisition Electronics

EMIR is a multiobject intermediate resolution near infrared (1.0-2.5 microns) spectrograph with imaging capabilities. The instrument is to be mounted on the 10 m Gran Telescopio Canarias (GTC), located on the Spanish island of La Palma. This paper gives an overview of the EMIR detector data acquisition electronics. The detector is an HAWAII-2 array. First, a description of the detector fan-out electronics is given, which involves the use of commercial components (resistors, capacitors and operational amplifiers) working under cryogenic conditions (~77K). The particulars of the cold electronics, the thermal considerations as well as the cabling design, detector controller architecture and data handling system are reviewed.