The Two Micron All Sky Survey (2MASS), conducted from 1997 to 2001, utilized a network of 1.3-meter telescopes equipped with HgCdTe detectors to capture images across three infrared bands: J-band (1.235 µm), H-band (1.662 µm), and Ks-band (2.159 µm). Covering the entire sky, it produced a comprehensive dataset including the Point Source Catalog with over 500 million detections of stars and galaxies, the Extended Source Catalog featuring 1.6 million resolved galaxies, and the Large Galaxy Atlas containing detailed images of approximately 600 nearby galaxies. The survey also provided All-Sky Quicklook and Atlas images, along with tools like Finder Charts and Six-Degree Mosaics for analyzing large sky regions. The data products have been widely used in astronomical research and require acknowledgment in published works.