REU Program

CTIO Research Experiences for Undergraduates (REU) Program

The 2014 REU/PIA students in front of the 4-m Blanco Telescope with the Dark Energy Camera showing at the top.

The 2014 REU and PIA Students

The Cerro Tololo Inter-American Observatory (CTIO), a division of the National Optical Astronomy Observatories (NOAO), located in La Serena, Chile, offers 10 week Undergraduate Research Assistantships to qualified undergraduates as part of the National Science Foundation funded Research Experiences for Undergraduates (REU) program. The program is run during the Chilean summer, January through March, both to offer students an alternative to the more common northern summer programs, and to encourage interaction with Chilean students visiting and working at CTIO throughout these months as a part of the Práctica en Investigación en Astronomía (PIA) Program.  The 2016 CTIO REU program will run from January 8th to March 19th, 2016.  You can find answers to common questions about the CTIO REU program on the Frequently Asked Questions page: REU/PIA FAQ.

We do not offer the REU program during the northern summer months of June through August. Students interested in programs during this period should investigate the opportunities provided at other REU sites and on the listings of summer programs maintained by the American Astronomical Society and the American Physical Society.

More information on how to apply to the CTIO REU program can be found in the application instructions. The application deadline for the 2015 program has passed.  The application form for the 2016 program will be available in August 2015, and applications for the 2016 program will be due October 1st, 2015. Our 2015 program accepted 6 REU students from U.S. institutions, and 2 PIA students from Chilean institutions.

If you have any questions about the CTIO REU Program, please send email to

Calendar of Activities for REU/PIA Students - 2014

CTIO PIA Program 

Current and Past REU/PIA Programs


CTIO REU & PIA Programs Publication List

Old REU/PIA Website