I think I managed to convince myself I am actually observing the Milky Way at 21cm
The attached image confirms the statement.. The marked "bump" is Milky way, the other track was taken with antenna away (at zenith).
The sharp peaks are external.. the middle one is from my test generator set at 1.4204GHz, the others are of unknown origin.. but definitely from Earth.
In the course of the observation (2 hours, max hold), I noticed the peak frequency of the bump (marked) was changing slightly (lowering..).
All this is increasing my confidence in the setup.. I will be able to prove to myself that Milky Way is rotating
