The Simons Observatory: Early Maps and Status of the Large Aperature Telescope

The Simons Observatory Large Aperture Telescope (LAT) is a 6 meter telescope located at an elevation of 5200 meters in the Atacama Desert in Chile. The maps produced by the LAT will cover 60% of the sky with unprecedented sensitivity at high resolution, with five times the angular resolution and ten times the map depth of Planck . The LAT achieved first light in February 2025 with ~30,000 polarization-sensitive detectors with bands centered at 90, 150, 220, and 280 GHz . Following its initial commissioning, the LAT began observations of Deep56, a 680 square-degree patch of the sky observed by the Atacama Cosmology telescope. Here we present maps and power spectra of these early observations. Additionally, we will summarize the performance of the LAT during its first year of observations and its current status.