Water masers are produced when water vapour (Hâ‚‚O) molecules in space act as a natural microwave laser. The word maser stands for Microwave Amplification by Stimulated Emission of Radiation. Here’s…
This is a map of the area around and including NGC7635, Bubble Nebula. According to Sky Safari Pro planetarium software, the Bubble Nebula is directly in the middle of this…
W49 is a radio source rather than a single visible object. It consists of two main components: Most planetarium programs don’t label “W49” by default, but you can usually locate…
This can be found on Alex’s Github pages where there are many excellent tutorials on many aspects of using this and other antennas – highly recommended. Access Alex’s Github page…
Yes, your spreadsheet is set up in the right way provided that the 1.72 dB is a power Y-factor. where (Y) must be a power ratio, not an amplitude (voltage)…
After the tests on 21/7/2026, I realised I needed to add in bias tee providing 12V to the Norsat 9000 – so the results on 21/7/2026 (21 July 2026) are…
For the flight from UK to USA to SARA Eastern Conference to process data at altitude vs data on ground for my talk at the conference. https://www.astronomy.me.uk/wp-content/uploads/2026/07/John-Savage-PicoMuon-Explorer-JS_PicoMuon3_2026-07-23.zip
Andy – I compared several inexpensive GPS disciplined Reference Oscillators in 2023: https://www.reeve.com/Documents/Articles%20Papers/Reeve_GDOComp.pdf or https://www.astronomy.me.uk/wp-content/uploads/2026/07/Reeve_GDOComp.pdf Whitham Reeve
Yes. The Norsat 9000LDF requires DC power supplied up the coax, so if your SDR or receiver does not provide this, you will need a bias tee (bias-T). For the…
For a Norsat 9000LDF LNB, you want a well-regulated, low-noise 12 V DC power supply. Switching power supplies can inject RF noise into sensitive radio astronomy equipment, so quality matters.…
Admin