Radio observation in hydrogen line (1420MHz)

Testing left Nooelec 1.4GHz mesh 60x100cm dish 28/2/2024

By Admin February 28, 2024

I have now tested this aerial with RTL-SDR Blog V3 SDR and SAWBird H+ LNA – the graph below demonstrates successful data collection.

Andy

By Admin

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Easy Radio Astronomy Software (ezRA) Radio observation in hydrogen line (1420MHz)

Hydrogen Line peak (H-Line, 1420 MHz) screen capture from ezCol.py capture software (part of ezRA suite) collecting data from a RTL-SDR Blog v3 Software Defined Radio on LRO-H2 radio telescope (150cm dish) on 22/1/2026

Radio observation in hydrogen line (1420MHz)

What is the impedance of 1420 Mhz (1.42 GHz) [atomic neutral hydrogen line] dipole?

Radio observation in hydrogen line (1420MHz)

When I observe Milky Way in hydrogen, the centre of the galaxy has little hydrogen line emission. Why is that?

Radio observation in hydrogen line (1420MHz)

When I detect hydrogen with my radio telescope, is it coming from the optically bright spiral arms or the optically dark areas between them?