DECam Legacy Survey Announces Third Data Release

The DECam Legacy Survey (DECaLS) has released reduced images and source catalogs covering between 4000 and 8000 square degrees of sky in three wavelength bands. Dive into survey images and explore the Universe with the survey’s Imagine Sky Viewer. DECaLS, which is being carried out on the CTIO Blanco telescope, is one of three public surveys that will jointly image 14,000 square degrees of sky to provide targets for the upcoming Dark Energy Spectroscopic Instrument cosmology project at the Kitt Peak Mayall telescope.

Read more in the NOAO Currents article.

Kitt Peak National Observatory (KPNO), part of the National Optical Astronomy Observatory (NOAO), supports the most diverse collection of astronomical observatories on Earth for nighttime optical and infrared astronomy and daytime study of the Sun. Sharing the mountaintop site with the National Solar Observatory, KPNO, founded in 1958, operates three major nighttime telescopes and hosts the facilities of consortia which operate 22 optical telescopes and two radio telescopes. (See the Tenant Observatories list.) Kitt Peak is located 56 miles southwest of Tucson, AZ, in the Schuk Toak District on the Tohono O'odham Nation and has a Visitor Center open daily to the public.

If you need to contact someone at NOAO but are uncertain of that person's email address, simply send email to "", i.e., or A general purpose email account has been set up to answer any questions you have about observing at Kitt Peak and don't know who to ask. Any and all questions you have can be e-mailed to this address: and it will be forwarded to the appropriate person.

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