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		| Paper: | 
		The GTC Telescope Control and Data Reduction Systems | 
	 
	
		| Volume: | 
		351, Astronomical Data Analysis Software and Systems XV | 
	 
	
		| Page: | 
		559 | 
	 
	
		| Authors: | 
		Gomez-Alvarez, P.; Garcia-Dabo, C.E.; Osinde, J.; Macias, R. | 
	 
	
	
		| Abstract: | 
		The 10.4-meter Gran Telescopio CANARIAS (GTC) is now approaching its first light, expected in September 2006. We describe two critical GTC software systems: The Data Factory, which is in charge of implementing and executing Real-Time engineering and scientific pipelines, and the GTC Telescope Control System (TCS), which implements the GTC Pointing, Tracking, Guiding and Active Optics. A simple yet powerful and generic unified method to transparently represent physical quantities and units throughout the GTC control system is also described. | 
	 
	
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