Mirror Coating Verification Tests at the Magdalena Ridge Observatory Interferometer

Details Mirror Coating Verification Tests at the Magdalena Ridge Observatory Interferometer Mirror Coating Verification Tests at the Magdalena Ridge Observatory Interferometer

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21347425m&link_type=abstract

American Astronomical Society, AAS Meeting #213, #474.25; Bulletin of the American Astronomical Society, Vol. 41, p.432

Astronomy and Astrophysics

Astronomy

Scientific paper

The Magdalena Ridge Observatory Interferometer will be a ten telescope optical interferometric array on top of the Magdalena Ridge at 3,320 meters. Each unit telescope will have an aluminum coated 1.4 m primary along with silver coated secondary and tertiary mirrors. These coatings must be able to withstand the harsh environmental changes that occur at high altitude. In order to test durability of the coatings as well as cleaning frequency, eight sample mirrors have been placed in an automated enclosure on Magdalena Ridge and exposed to the environment during nighttime observing conditions. This poster presents the reflectance of the Ridge samples before and after cleaning, and compares them to that of partner samples kept sealed in the lab after an eight month period of time.

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