In this work, we present the first results of the ATLAS (Asteroid Terrestrial-impact Last Alert System) unit installed by the Instituto de Astrofisica de Canarias (IAC) at Teide Observatory (TO) on Tenerife Island, Spain, in January 2025. The ATLAS-Teide unit operate as part of the ATLAS network (https://atlas.fallingstar.com/) under an agreement between the IAC and the University of Hawaii (UH), encompassing both operational and scientific exploitation.

ATLAS, developed by the UH and funded by NASA, is an asteroid impact early warning system consisting of four telescopes (two in Hawaii, one in Chile, and one in South Africa). Each ATLAS unit surveys a quarter of the night sky, making four observations of each field at hourly intervals, and is capable of detecting asteroids with a brightness of V=19.5 mag. This system aims to identify small (~20 m) asteroids on impact trajectories several days in advance and larger (~100 m) asteroids weeks prior to impact. The current ATLAS configuration uses 50 cm Wright-Schmidt telescopes paired with CCD cameras that image a 30 deg2 field of view in a single exposure.

ATLAS-Teide, introduces a novel and more cost-effective modular design, employing commercial off-the-shelf (COTS) components. Each module consists of four Celestron RASA 11 telescopes mounted on an equatorial Direct Drive mount PlaneWave L550, with QHY600PRO CMOS cameras capturing a shared field of view. Each module achieves an effective aperture equivalent to a 56 cm telescope, with a 7.5 deg2 field of view and a plate scale of 1.25""/pixel. A prototype module, ATLAS-P, was installed in November 2022 at an existing clamshell facility, and operated during 2023 at TO with the aim of testing the system's capabilities and developing the necessary control and image processing software. It demonstrated compliance with all mechanical, electrical, and optical requirements. The ATLAS-Teide installation consists of four such modules housed in a roll-off roof building and it is close to start normal operations. This configuration covers the same sky area as the existing ATLAS units, allowing to observe ~6000 deg2 four times per night doing images of 30s total exposure times. ATLAS-Teide is reporting astrometry of thousands of asteroids p/night including between 10-20 NEAs. In a total of 16 commissioning nights reported 171552 individual detections of 27081 individual asteroids and 77 NEOs

This innovative approach positions ATLAS-Teide as a transformative addition to the global asteroid impact monitoring network.