EMIR Detector Data Acquisition Electronics

EMIR is a multiobject intermediate resolution near infrared (1.0-2.5 microns) spectrogroph 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 HA WAII-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 (similar to 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.