Zoran Ninkov

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A system for controlling and testing high-resolution non-destructive astronomical imagers was constructed using open-source components, both hardware and software. The open-source electronics design, originated by Carnegie Observatories (OCIW) for CCD cameras, was modified, assembled, and augmented with new circuitry which facilitates monitoring of voltages(More)
William J. Forrest University of Rochester Physics and Astronomy Department Rochester, New York 14627 Abstract. Pixels in both hybridized and monolithic complementary metal-oxide semiconductor CMOS detector arrays may couple capacitively to their neighboring pixels. This “interpixel capacitance” can significantly distort the characterization of conversion(More)
A novel multi-object spectrometer (MOS) is being explored for use as an adaptive performance-driven sensor that tracks moving targets. Developed originally for astronomical applications, the instrument utilizes an array of micromirrors to reflect light to a panchromatic imaging array. When an object of interest is detected the individual micromirrors(More)
Inter-pixel capacitive coupling can exist in a non-destructive detector array if the detector nodes change voltage as they integrate charge and the design of the device allows for an electric field to exist between adjacent collection nodes. Small amounts of inter-pixel capacitance can cause large errors in the measurement of poissonian noise versus signal,(More)
This paper reports on the use of a tunable, liquid-crystal Ðlter to obtain simultaneous, low-resolution spectrophotometry of multiple stars within a moderately crowded Ðeld. The Ðlter is electronically tunable to any wavelength in the range from 400 to 720 nm with a nominal passband of 10 nm FWHM. In order to evaluate the performance of this Ðlter, the(More)
Two hundred seventy-seven position angle and separation measures of 154 double stars are presented. Three of the systems were previously unknown to be double, and 16 other systems were discovered earlier this decade by the Hipparcos satellite. Measures are derived from speckle observations taken with the Wisconsin-Indiana-Yale-NOAO (WIYN) 3.5 m telescope(More)
The DMD (Digital Micromirror Device) has become an integral part of the instrumentation for many applications. Prior characterization of this device has been focused on its use in DLP (TI Digital Light Processing) projector applications where a collimated wavefront impinges on the DMD. The results of such investigations are not applicable to using DMDs at(More)
Optics, Photonics, and Imaging 1 Terahertz Techniques Based on Laser-Induced Microplasmas Fabrizio Buccheri, Institute of Optics, University of Rochester Ambient air becomes a source of ultrabroadband terahertz pulses and an ultrafast terahertz sensor when ionized by femtosecond laser fields. The integration of such a plasma source and sensor in terahertz(More)
In many imaging systems the ultimate performance is determined by the focal plane array that converts photons into an electrical signal that can then be recorded. Such focal plane arrays are available that operate at wavelengths ranging from the X-ray to the radio region of the electromagnetic spectrum. An explanation of the underlying physics of focal(More)