Small Horn RadioTelescope in Action

A radio telescope is easy to use, day or night, and is great for live demos of astronomy, no matter the weather. We show the Gnu Radio interface of our small radio telescope. In just a few minutes we've discovered the spiral arms of our galaxy and are beginning our explorations.
For telescope construction details see: WVURAIL.org particularly the Lightwork memos: github.com/WVU...
The Raspberry PI operating system is available as a free download with an installation guide. With some determination and a Raspberry Pi 4B or 400 computer you can start to explore the universe from your own back yard.
Franco Venturi has been busy cleaning up the Raspberry Pi Operating
system for use with Radio Astronomy. GnuRadio version 3.10.1.1 is installed in the Raspberry Pi operating system is now on the cutting edge.
The Operating system is now 64bit, which is supposed to increase the efficiency of the software.
The installation guide and operating system are available for download
in this shared Google Drive:
drive.google.c...
The document and OS are tagged with date 22Feb24.
The operating system is compressed to 2.26 Giga-Bytes:
NsfGR310-22Feb24.img.xz
The guide name is:
RadioAstronomyWithRaspberry-2022Feb24.pdf
Hope this is helpful!
This version is tested with these SDRs:
AIRSPY R2, Mini,
SDRPLay RSP1A
RTL-SDR
PlutoSDR There are a couple minor corrections to the description in the video. The Ground is much hotter than the Sky. The ground temperature 65F corresponds to about 290 Kelvins. The actual cosmic background is very very cold 2.7 Kelvins corresponding to -455 F. The GPIO Labs amplifier actually has an effective temperature under 100Kelvin, corresponding to lower (better) than -280F. But the software measures the ratio of Temperature to Gain. Since the signal when the telescope is pointed up is about 150 Kelvins, that means the gain is about half,
so half the radio signal from the sky reaches the amplifier.
The GPIO Labs amplifier is for sale online: gpio.com/produ...