This is a typical result of scanning the Hydrogen line signal of the milkyway
using my homebuilt Radio Telescope.

An overview of my Radio Telescope can be found here:

https://www.astrobin.com/6oypz0/D
https://www.astrobin.com/298870/B
https://www.astrobin.com/297645/D

A) Original:

   This is a raw 72 hour realtime scan image of the hydrogen line radio spectrum
   Each 24 hours the milkyway signals are clearly visible two times coming from
   different galactic coordinates since I fixed the telescope position at  AZ 180°
   and in case of this image at EL of 30°

B) Actual target position at night transit 

C) Actual target position at day transit

    The red square at target is the approximate area from which I receive
    the signal using my 2.4m dish at 1.42 GHz frequency

D) I divided the 72 hour image into three segments and stacked them using fitswork4

     lower part : one of the three segments raw image

     upper part: stacked image result

E) Final

     two different contrast enhancements on the stacked image, i.e.
     using the combination of a contrast enhanced Luminance and the stacked image
     and other methods.

    Here I fruitfully brought in my learned image processing skills and tools 
     of processing optical images. hehe

     There is still a noisy background , most of it is stemming
     from the famous "Cosmic Microwave Background" CMB.


The " radio image " is not an image like optical wavelengths, it is a spectral image
with a bandwidth of 2 MHz. The rest hydrogen line frequency is at the center.
So what we see is here is the doppler frequency signal spread by the various arms of the milkway.

The red scale to the right shows the time signal  at quarter hour, full hour and 24 hour marks.

The red vertical line is the integrated power amplitude of the 2 MHz bandwith
signal  showing  the two different milkyway transits as erected bumps.

The other faint intermittent vertical line within the blue area seems to be a stray ground based signal , as there is no doppler shift visible.
There are times and certain RT elevations with non of this signal visible.

enjoy

Wanni