Siana inside Keck Observatory (image) University of California - Riverside Caption This is the reflection of Brian Siana in the primary mirror of the Keck telescope. The telescopes' mirrors are made of 36 hexagonal segments. Credit Barbara Schaefer, Keck Observatory. Usage Restrictions None Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.