KALI camera - mid-infrared camera for the Keck Interferometer Nuller
We present a brief overview of the KALI Camera, the mid-infrared camera for the Keck Interferometer Nulling Project, built at the Jet Propulsion Laboratory.
Mid-infrared↗
Engineering topics
Palmer, D. L.
Publications and source records attributed to Palmer, D. L..
Performance and verification of the Keck Interferometer fringe detection and tracking system
We briefly discuss the instrument design of the Keck Interferometer from a hardware and realtime controls standpoint. We also show some recent visibility data from the instrument and summarize Fatcat's limiting sensitivity. Finally, we will discuss near and longterm evolution of the instrument through planned upgrades and summarize avenues for enhanced capability.
stellar↗
The Palomar Testbed Interferometer
The Palomar Testbed Interferometer (PTI) is a long-baseline infrared interferometer located at Palomar Observatory, California. It was built as a testbed for interferometric techniques applicable to the Keck Interferometer. First fringes were obtained in 1995 July. PTI implements a dual-star architecture, tracking two stars simultaneously for phase referencing and narrow-angle astrometry. The three fixed 40 cm apertures can be combined pairwise to provide baselines to 110 m. The interferometer actively tracks the white-light fringe using an array detector at 2.2 microns and active delay lines with a range of +/-38 m. Laser metrology of the delay lines allows for servo control, and laser metrology of the complete optical path enables narrow-angle astrometric measurements. The instrument is highly automated, using a multiprocessing computer system for instrument control and sequencing.
Colavita, M. M.↗