NSGen-II noise generator for absolute calibration for SPIDER500

Reference NSGEN-II-5

NSGen radio telescope noise generator for absolute calibration is designed for SPIDERs and it can be used to calculate the flux in Jy of a radio source or sky area, by compensating atmospheric attenuation or any gain loss because of different factors (for example, antenna deformation because of its weight). The NSGen noise generator is installed on the SPIDER H-FEED for 1420 MHz frequency and connects directly to the H142-One radio astronomy receiver of SPIDER radio telescopes.

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€4,209.00

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Description

Goal of the Gain Calibration procedure is to calibrate the noise generator by performing several Total Power measurements on a set of radio sources with radio flow known from the literature. Therefore, for each radio source, these Total Power measurements can be recorded:

ON source (on the radio source, with noise generator OFF)
OFF source (off radio source with noise generator OFF)
CAL (off radio source with noise generator ON)

Measurements recorded in every step can be used to calibrate the noise generator and the radio telescope and this will allow to record antenna temperature and flux measurements. NSGen noise generator for absolute calibration comes with noise generator (1), connection cable for H142-Pro receiver (2), metallic clamps for installation (3).

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SPIDER500A

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SPIDER 500A MarkII is the 5 meter diameter professional radio telescope designed to make 1420 MHz level radio astronomy accessible to everyone: universities, science institutes and museums or space agencies. It offers a large 5 meter diameter antenna to detect weaker signals with a better resolution, the large GS-400II tracking system that provides very...

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