But studying the H-line is a non-trivial task unless you know how to cascade low-noise amplifiers and filters to use an SDR for radio astronomy. Because the universe is mostly made of hydrogen ...

What do you get when you put a one-meter parabolic dish, an SDR, a Raspberry Pi, and an H1-LNA for 21 cm emissions together? The answer is: a radio telescope that can track hydrogen in the Milky ...

For less than $400, it's possible to observe places like the star-forming regions at the center of our galaxy.

It’s a case of re-inventing the wheel every time a radio telescope goes on the air or changes its strategy. Given the scarcity of research dollars, this is clearly a problem pleading for a solution.