Cataloging the Entire Sky with NOAO
Abstract
More than two thirds of the sky has now been imaged in at least one band with NOAO's telescopes. The large majority of these data were obtained for PI-led projects and surveys, and thus far only a small fraction have been released to the community via well-calibrated and easily accessible catalogs. We are remedying this by creating a catalog of sources from most of the public data taken using the CTIO-4m+DECam and KPNO-4m+Mosaic3. This catalog, called the NOAO Source Catalog (NSC), currently covers ~25,000 square degrees, contains 20 billion individual measurements of 2 billion unique objects, and has 10-sigma depths of ~23rd magnitude in most broad-band filters and astrometric accuracy of ~20 mas. The NSC can be used to investigate stellar streams, dwarf satellite galaxies, galaxy distributions, variable stars and other transients. I will give an overview of the first public data release distributed through NOAO Data Lab and discuss initial results from a search for Milky Way satellite galaxies using the new catalog.
- Publication:
-
American Astronomical Society Meeting Abstracts #231
- Pub Date:
- January 2018
- Bibcode:
- 2018AAS...23133205N