Observing with the ADC
Technical Pages
Trouble Shooting Index
Trouble Shooting pages and links. A listing of the instrument pages.


The Cassegrain Atmospheric Dispersion Compensator ("Cass ADC") module for the Keck I telescope allows LRIS to operate with reduced differential refraction from zenith to an airmass of 2. The module was designed and built at UCO/Lick observatory, was delivered in January 2007, and saw first light later in that month. The Cass ADC has undergone commissioning during semester 2007A and was released for shared risk observing in June 2007. Pending successful completion of its Operational Readiness Review in July 2007, the Cass ADC will be released for routine observing with LRIS in semester 2007B starting with the August LRIS run.


The Keck-I Cassegrain atmospheric dispersion corrector
Phillips, A. C., Miller, J., Cowley, D., Wallace, V. 2006, SPIE, 6269, 56