Adding 2nd monopole onto cantenna to improve signal reception
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Two monopoles at 90 degrees in cantenna One connects to splitter immediately Two connects via coax either 1/4 wavelength or 5/4 wavelength (more practical length = 26.5cm x 66% (velocity…
How do I normalise data from multiple radio telescope systems so I can combine them together?
How do I normalise data from multiple radio telescope systems so I can combine them together? Great question, Andrew. Here’s a practical, radio-astronomy-friendly playbook for putting multiple systems onto the…
Marcus’s reply about Soapysdr and Sdrplay. Seems the gain settings are backwards in software.
https://groups.google.com/g/sara-list/c/o7xGe2hYkHc/m/VnaAH2u9AgAJ
GPIO Labs 1420 MHz amplifier and filter
Provides an alternative to the Nooelec SAWBird H1 low noise amplifier and filter for hydrogen line radio astronomy. Currently the SAWBird is not available. I have not myself used the…
Cheap RF phase shifter boards
Readily available at cheap prices. The following is one example of many available.
Cheap signal generators
These are readily available covering wide range of frequencies. The one below is presented as an example only.
Is there a tutorial from Bonn University that demonstrates how professional astronomers convert raw radio data—particularly HI 21 cm observations?
You’re asking about a tutorial from Bonn University that demonstrates how professional astronomers convert raw radio data—particularly HI 21 cm observations—into calibrated intensity measurements. Here’s what I found: Resources at…
How professionals convert raw telescope voltages into intensity maps of hydrogen in different parts of the Milky Way
Great question, Andrew — this is right at the heart of how the Milky Way has been mapped in neutral hydrogen (HI) at 1420.405 MHz. Professional radio astronomers follow a…
Hypernovae
Astronomers have detected events that we classify as “hypernovae.” The word hypernova isn’t an official supernova classification but is widely used to describe the most energetic stellar explosions, usually linked…
What Is the Lichfield Radio Observatory?
Here’s a peek at the Lichfield Radio Observatory (LRO) setup—featuring some of its unique equipment and data visualizations. What Is the Lichfield Radio Observatory? The Lichfield Radio Observatory (LRO) is…