I've had a lot of fun doing Hydrogen line backyard astronomy. I wrote up an article on my experience [1]. These are two great sites as well [2][3]. [1]https://

I've had a lot of fun doing Hydrogen line backyard astronomy. I wrote up an article on my experience [1]. These are two great sites as well [2][3]. [1]https://hmcguinn.com/posts/hydrogen-line/ https://hmcguinn.com/posts/hydrogen-line/ [2]https://www.rtl-sdr.com/cheap-and-easy-hydrogen-line-radio-astronomy-with-a-rtl-sdr-wifi-parabolic-grid-dish-lna-and-sdrsharp/ https://www.rtl-sdr.com/cheap-and-easy-hydrogen-line-radio-a... [3]https://physicsopenlab.org/2020/09/08/milky-way-structure-detected-with-the-21-cm-neutral-hydrogen-emission/ https://physicsopenlab.org/2020/09/08/milky-way-structure-de...