The liverpool telescope is a 2m fully robotic telescope based in the Canary Islands . The Torino group have begun a collaboration with Hugh Jones (University of Hertfordshire) to use this telescope to determine parallaxes for L and T dwarfs of medium brightness using the RATCam instrument. This program started in 2005 during commissioning time and current work in centered on reducing the effect of fringing as shown in this example image of the T-dwarf 2MASS2238+4353.

Telescope and Site Specifications Latitude: 28.76254° N Longitude: 17.879192° W Altitude: 2344 m Primary mirror diameter 2m Focal ratio f/10 Ritchey-Chretien optics Altitude-Azimuth design RATCam Instrument Detector: 2048x2048 pixel EEV CCD42-40 Back-illuminated non-aimo AR coated broadband chip Pixel Size 13.5 microns = 0.135 arcsec/pixel Field of view 4.6 x 4.6 arcmin Filter used Sloan z', > 8510 Angstroms

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