top of page

Radio Astronomy: Hydrogen Lines of the Milky Way

A very cool project by a group at the Petnica Science Center in Serbia shows you can listen to the atomic hydrogen emission spectra at 1420MHz (21cm) with an SDR, low noise amplifier, 1m (or thereabouts) parabolic dish, and elbow grease.








This spectral line is of interest to map out the hydrogen distribution in the galaxy, which helps scientists understand the origins and evolution of stellar phenomena: https://www.astro.umd.edu/~richard/ASTRO620/HI_dist_MW_Kerp.pdf


It looks like they were using a custom fabricated telescope mount to track the center of the galaxy, although I'm sure it's hard to miss in a dark sky.

Recent Posts

See All

50 Things to do with an SDR

In honor of Blinry's excellent post, check out https://blinry.org/50-things-with-sdr/ Just in case you ran out of ways to explore with your incredibly powerful $35 SDR dongle.

Comments


Commenting has been turned off.
bottom of page