Month: April 2015

21cm hydrogen line telescope, version 2

Much has happened since my last status report on my attempts to observe the galactic hydrogen emission at the famous 1420.4 MHz hyperfine structure line. Now, the new setup is finally proven to be basically working, and in this post I want to describe some of the changes I did. New data acquisition module Most importantly, I replaced the spectrum analyzer by a self-made data acquisition unit which is basically […]

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