Short answer — yes you can do radio interferometry with the SDRPlay RSPDuo software defined radio, but with caveats. Downloads to go with this post mentioned in text below: https://www.astronomy.me.uk/wp-content/uploads/2025/09/sdrplay_windows_package.zip…
Ted Cline who has written ezRA has now added a new feature which gives users the ability to limit data used in analyses to a narrow range +/- near galactic…
A ready-to-run GNU Radio Companion flowgraph + Python calibration script, tuned for 1420 MHz hydrogen line work. Downloads to go with this post: https://www.astronomy.me.uk/wp-content/uploads/2025/09/interferometer_polarimetry_bundle.zip https://www.astronomy.me.uk/wp-content/uploads/2025/09/RSPduo_Interferometer.zip https://www.astronomy.me.uk/wp-content/uploads/2025/09/RSPduo_Interferometer_Flowgraphs.zip Here is a working…
A practical recipe for successfully improving signal detection using two orthogonal monopoles in a cantenna. Great — here’s a practical recipe you can use with your setup (2 orthogonal probes,…
Short answer: it depends on how you plan to combine the two channels: Practical options for your setup What to do based on your goal Why is a shared clock…
I tried adding second monopole onto 1420 MHz cantenna at 90 degrees to first monopole in attempt to improve signal, with 1.5 wavelength phasing cable on one monopole. I used…
There are several open-source software tools and libraries for interferometry / correlator / radio astronomy work. Depending on how much of the pipeline you want (just correlation, calibration + imaging,…
Some concrete examples of small-scale / home interferometry projects that use open-source software, so you can see how people have actually tied the pieces together. Here are some examples you…
Modelling a 3 m dish at 1420.405 MHz in two ways: You’ll see: Diagrams: • Unblocked beam 2D: • Prime-focus (blocked+struts) beam 2D: • Beam cuts for 3m dish (this…
This comes up a lot in both radio astronomy and satellite communication when using prime-focus reflectors. On a prime-focus parabolic dish, diffraction effects mainly arise from: 1. Feed Support Legs…
Admin