Report of a simple 2-Element Solar Radio Interferometer at Bleien Observatory
نویسندگان
چکیده
A 2-element Michelson radio interferometer was installed at Bleien observatory. The main task of the experiment was on the one hand the demonstration of a solar interferometer with low cost components, on the other hand to compare different radio spectrometers as a backend for the interferometer. Furthermore, we tried to optimize the equipment to find the limits of the instrumental setup concerning radiometric sensitivity and angular resolution. Solar fringes were analyzed to determine these parameters. The sensitivity was found to be of the order of 0.3 Kelvin at a system temperature of 187 Kelvin while the angular resolution was found to be of the order of about 57′′.
منابع مشابه
Radio observations of a coronal mass ejection induced depletion in the outer solar corona
We report the first low frequency radio observations of a depletion that occurred in the outer solar corona in the aftermath of the CME event of 1986 June 5, with the large E-W one dimensional grating interferometer at the Gauribidanur radio observatory. We estimated the mass loss associated with the depletion and found that it agrees well with the value obtained through white light observation...
متن کاملA 33 GHz interferometer for CMB observations on Tenerife
We describe a new high sensitivity experiment for observing cosmic microwave background (CMB) anisotropies. The instrument is a 2-element interferometer operating at 33 GHz with a ∼3 GHz bandwidth. It is installed on the high and dry Teide Observatory site on Tenerife where successful beam-switching observations have been made at this frequency. Two realizations of the interferometer have been ...
متن کاملCALLISTO - A New Concept for Solar Radio Spectrometers
A new radio spectrometer, CALLISTO, is presented. It is a dual-channel frequency-agile receiver based on commercially available consumer electronics. Its major characteristic is the low price for hardware and software, and the short assembly time, both two or more orders of magnitude below existing spectrometers. The instrument is sensitive at the physical limit and extremely stable. The total ...
متن کاملFirst Light of the Near-infrared Narrow-band Tunable Birefringent Filter at Big Bear Solar Observatory
We discuss a near-infrared (NIR) narrow-band tunable birefringent filter system newly developed by the Big Bear Solar Observatory (BBSO). This is one of the first narrow-bandpass NIR filter systems working at 1.56 μm which is used for the observation of the deepest solar photosphere. Four stages of calcite were used to obtain a bandpass of 2.5 Å along with a free spectral range (FSR) of 40 Å. S...
متن کاملThe Very Small Array
The Very Small Array (VSA) is a fourteen-element interferometer designed to study the cosmic microwave background on angular scales of 2.4 to 0.2 degrees (angular multipoles l = 150 to 1800). It operates at frequencies between 26 and 36 GHz, with a bandwidth of 1.5 GHz, and is situated at the Teide Observatory, Tenerife. The instrument also incorporates a single-baseline interferometer, with la...
متن کامل