The Millimetron Space Observatory will be equipped with the cryogenically cooled instrument for a Space-Earth Very Large Baseline Interferometry (S-E VLBI). It will be a multi-channel heterodyne receiver with 7mm, 3mm, 1.3mm and 0.8mm channels. The VLBI instrument will have a multi-frequency capability, provided by signal splitting in the input optics and by back-end functionalities. The optical design is shown in this report.
KEYWORDS: Receivers, Antennas, Interferometers, Space operations, Mirrors, Telescopes, Computer programming, Waveguides, Space observatories, Radio telescopes
Millimetron Space Observatory will be equipped with the cryogenically cooled instruments for a Space-Earth Very Large Baseline Interferometry (S-E VLBI). It will be a heterodyne multichannel receiver including 7mm, 3mm, 1.3mm and (presumably) 0.8mm channel. Two low frequency channels will be based on HEMT amplifiers, while for the high frequencies superconductor-insulator-superconductor (SIS) receivers will be utilized. The VLBI instrument will have a multi frequency capability allowing simultaneous observation using several channels. This mode has a high potential for improving of black hole event horizon observations due to phase transferring capabilities. The multi frequency observation will be provided by a signal split in the input optics and by back-end capabilities.
Millimetron is a cryogenically cooled 10-m aperture space observatory. The telescope of the observatory will be maintained at a temperature less than 10 K, enabling its unprecedented sensitivity gain and will operate from 50 µm to 10 mm, encompassing the far-infrared, submillimeter and millimeter wavelength ranges. Observatory has two modes of observations: as a single dish space telescope, and as an element of Space-Earth Very Large Baseline Interferometer (SVLBI). Scientific instrumentation includes four instruments with capabilities for imaging, spectroscopy (medium- and high-resolution) and polarimetry, as well as an instrument for space-earth interferometry. We describe the key science cases and progress of the MSO development.
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