Tag: antenna

1420.4 MHz Hydrogen line: There it is!

With a reasonably simple setup, I finally succeeded in detecting the 1420.4 MHz galactic hydrogen hyperfine structure line: One of the first successful measurements. The little bulge in the center of the image is the hydrogen line. The sharp, high peaks are man-made interference and not part of the astronomical signal. The yellow line is with the telescope pointed towards the milky way, the pink line is for a different […]

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Radio Interferometer: status update

As you probably do not know, I’m currently trying to build a semi-digital radio interferometer at 408MHz, for astronomy. I played around a bit with patch antennas, and did some very basic “interferometry” tests with them. Some extremely bad tinfoil patch antennas being used for “interferometry” Basic idea of how this interferometer could work The plan for this telescope goes something like this: There’s an arbitrary number of antennas (the […]

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