Real time processor for array speckle interferometry

Conference · Wed Feb 01 04:00:00 EST 1989 · IEEE Trans. Nucl. Sci.; (United States)

OSTI ID:6416176

Chin, G; Florez, J; Borelli, R; Fong, W; Miko, J; Trujillo, C

With the construction of several new large aperture telescopes and the development of large format array detectors in the near IR, the ability to obtain diffraction limited seeing via IR array speckle interferometry offers a powerful tool. We are constructing a real-time processor to acquire image frames, perform array flat-fielding, execute a 64 x 64 element 2D complex FFT, and to average the power spectrum all within the 25 msec coherence time for speckles at near IR wavelength. The processor is a compact unit controlled by a PC with real time display and data storage capability. It provides the ability to optimize observations and obtain results on the telescope rather than waiting several weeks before the data can be analyzed and viewed with off-line methods.

• Research Organization: Planetary Systems Branch, Code 693 (US); Instrument Electronic System Branch, Code 728, NASA/Goddard Space Flight Center, Greenbelt, MD (US)
• OSTI ID: 6416176
• Report Number(s): CONF-881103-
• Conference Information: Journal Name: IEEE Trans. Nucl. Sci.; (United States) Journal Volume: 36:1
• Country of Publication: United States
• Language: English

Related Subjects

440101* -- Radiation Instrumentation-- General Detectors or Monitors & Radiometric Instruments
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
640100 -- Astrophysics & Cosmology
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DATA ANALYSIS
DATA PROCESSING
ELECTROMAGNETIC RADIATION
INFRARED RADIATION
INTERFEROMETRY
NEAR INFRARED RADIATION
PERFORMANCE
PROCESSING
RADIATIONS
REAL TIME SYSTEMS
TELESCOPE COUNTERS