EUSO-TA is an on-ground telescope, located at the Telescope Array (TA) site in Black Rock Mesa, Utah, USA. The main aim of the instrument is observation of Ultra High Energy Cosmic Rays through detection of ultraviolet light generated by cosmic-ray showers. EUSO-TA consists of two, 1 m2 Fresnel lenses with a field of view of about 11x11. Light is focused on the Photo Detector Module composed of 36 Hamamatsu multi-anode photomultipliers, for a total of 2304 channels. The telescope is housed in a shed located in front of the TA Fluorescent Detector. We present the results from 5 observational campaigns of EUSO-TA, including detected cosmic rays and meteors. Also shown are the
studies done with dedicated artificial light sources, such as LEDs and lasers.