Annual Reports

Annual Report 2015
Annual Report 2014
Annual Report 2013
Annual Report 2012
Annual Report 2011
Annual Report 2010
Annual Report 2009

The W. M. Keck Observatory is very grateful for the generosity of individuals, corporations and foundations that recognize the value of our science and leadership in this golden age of astronomical exploration.

With your support, Keck Observatory astronomers will continue to push the frontiers of exploration, discovering new worlds, probing the mysteries of the Milky Way, and measuring distant galaxies and other cosmic phenomenon to further understand the nature of the Universe and our place in it.


Keck Observatory is recognized as one of the most prolific and sought-after tools in astronomy. Made possible by a grant of $138 million from the W. M. Keck Foundation, the Keck I telescope began science observations in 1993, observations with Keck II began in 1996. Today, as a private non-profit research and education organization, Keck is supported by both public funding sources and private philanthropy.

Audited Financials 2018
Audited Financials 2017
Audited Financials 2016
Audited Financials 2015
Audited Financials 2014
Audited Financials 2013
Audited Financials 2012
Audited Financials 2011
Audited Financials 2010
Audited Financials 2009