Tags » Interferometry

Testing a convex aspherical mirror with a Null system

Last week I designed a Ritchey-Chretien type astrograph that employed a convex aspherical secondary mirror. Convex surfaces are difficult to measure during manufacture, asphericals even more so, so I will discuss a method to measure such a surface. 492 more words

Case Study

From Keck: "Scientists Accurately Quantify Dust Around Planets in Search for Life"

Keck Observatory

December 2, 2014
SCIENCE CONTACT:
Bertrand Mennesson, PhD
Jet Propulsion Laboratory
(818)-354-0494
bertrand.mennesson@jpl.nasa.gov

MEDIA CONTACT
Steve Jefferson
Communications Officer
W. M. Keck Observatory… 1,348 more words

Basic Research