منابع مشابه
Automation of a plane grating spectrograph
A Zeiss model PGS-2 plane grating spectrograph was automated by replacing its photograph film detection system with an EGG-Reticon 1024S photodiode array (PDA) and by controlling the main instrument functions through the use of a home-made interface connected to a microcomputer. The array was cooled by four Peltier elements to allow integration of the emitted light for up to 40 s. The interface...
متن کاملA slit grating spectrograph for quantitative soft x-ray spectroscopy
In this article we describe a new slit grating spectrograph which is based on an e-beam written 10 000 linepairs/mm freestanding transmission diffraction grating. In combination with a thinned, back-illuminated charge coupled device ~CCD!, the spectrograph allows for real-time spectroscopy of laser-produced plasma x-ray sources within the wavelength region l51–20 nm. Calibration of grating and ...
متن کاملCrowding in the GAIA spectrograph focal plane
Superpositions of stellar tracings are present in every slitless spectrograph. The probability for such overlaps in the GAIA RVS spectrograph focal plane is estimated using photometric observations of 66 stellar fields, mostly close to the Galactic plane. It is shown that overlaps of bright stars (V < 17) are common near the Galactic plane, and no spectrum is free from superpositions of faint s...
متن کاملA Single-Element Plane Grating Monochromator
Concerted rotations of a self-focused varied line-space diffraction grating about its groove axis and surface normal define a new geometric class of monochromator. Defocusing is canceled, while the scanned wavelength is reinforced at fixed conjugate distances and horizontal deviation angle. This enables high spectral resolution over a wide band, and is of particular advantage at grazing reflect...
متن کاملA Plane Tracker for AEC Automation Applications
In this paper, we propose a new registration algorithm and computing framework, the KEG tracker, for estimating a camera’s position and orientation for a general class of mobile context-aware applications in Architecture, Engineering, and Construction (AEC). By studying two classic natural marker-based registration algorithms, Homography-from-detection and Homography-from-tracking, and by overc...
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ژورنال
عنوان ژورنال: Journal of Automatic Chemistry
سال: 1996
ISSN: 0142-0453
DOI: 10.1155/s1463924696000028