منابع مشابه
GASP - Galway Astronomical Stokes Polarimeter
The Galway Astronomical Stokes Polarimeter (GASP) is an ultra-high-speed, full Stokes, astronomical imaging polarimeter based upon a Division of Amplitude Polarimeter. It has been developed to resolve extremely rapid stochastic (∼ms) variations in objects such as optical pulsars, RRATs and magnetic cataclysmic variables. GASP has no moving parts or modulated components, so the complete Stokes v...
متن کاملTriple Wollaston-prism complete-Stokes imaging polarimeter.
Imaging polarimetry is emerging as a powerful tool for remote sensing in space science, Earth science, biology, defense, national security, and industry. Polarimetry provides complementary information about a scene in the visible and infrared wavelengths. For example, surface texture, material composition, and molecular structure will affect the polarization state of reflected, scattered, or em...
متن کاملThe imaging equation for a microgrid linear Stokes polarimeter
Imaging polarimeters have currently and historically been largely used for remote sensing tasks. They have also been used to evaluate the defects and calibrate the polarization of liquid crystal displays. A particular type of polarimeter that has a great deal of unrealized potential is the microgrid array linear Stokes polarimeter. This type of polarimeter is not often used because of reconstru...
متن کاملOptimization of retardance for a complete Stokes polarimeter.
We present two figures of merit based on singular value decomposition, which can be used to assess the noise immunity of a complete Stokes polarimeter. These are used to optimize a polarimeter featuring a rotatable retarder and a fixed polarizer. A retardance of 132 degrees (approximately three-eighths wave) and retarder orientation angles of +/-51.7 degrees and +/-15.1 degrees are found to be ...
متن کاملXPOL - the correlation polarimeter at the IRAM 30m telescope
XPOL, the first correlation polarimeter at a large millimeter telescope, uses a flexible digital correlator to measure all four Stokes parameters simultaneously, i.e. the total power I, the linear polarization components Q and U , and the circular polarization V . The versatility of the backend provides adequate bandwidth for efficient continuum observations as well as sufficient spectral resol...
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ژورنال
عنوان ژورنال: Astrophysical Bulletin
سال: 2021
ISSN: 1990-3413,1990-3421
DOI: 10.1134/s1990341321010028