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astronomy.network The Website of Lichfield Radio Observatory (LRO)

astronomy.network The Website of Lichfield Radio Observatory (LRO)

Andrew Thornett, Lichfield, England, M6THO, andrew (at) thornett (dot) net

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  • SHOOS - SARA Hydrogen-Observing Overall Survey
Radio observation in hydrogen line (1420MHz)
September 7, 2025 Admin

How to take the signals from multiple antenna pairs and turn them into an actual sky image using Fourier transforms

Good question — you’re asking about the heart of radio interferometric imaging: how to take the signals from multiple antenna

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Radio observation in hydrogen line (1420MHz)
September 7, 2025 Admin

Adding 2nd monopole onto cantenna to improve signal reception

Two monopoles at 90 degrees in cantenna One connects to splitter immediately Two connects via coax either 1/4 wavelength or

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Radio observation in hydrogen line (1420MHz)
September 7, 2025 Admin

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

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Software
September 7, 2025 Admin

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

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Radio observation in hydrogen line (1420MHz)
September 7, 2025 Admin

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

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Uncategorized
September 7, 2025 Admin

Cheap RF phase shifter boards

Readily available at cheap prices. The following is one example of many available.

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Uncategorized
September 7, 2025 Admin

Cheap signal generators

These are readily available covering wide range of frequencies. The one below is presented as an example only.

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Uncategorized
September 7, 2025 Admin

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

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Radio observation in hydrogen line (1420MHz)
September 7, 2025 Admin

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

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Uncategorized
September 7, 2025 Admin

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

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Recent Posts

  • Fast Fourier Transformation (FFT)
  • Why is there a central spike in frequency plots from many software defined radios?
  • Comparing Software Defined Radios for Radio Astronomy
  • Meteorology-Relevant Facility at Harwell Campus
  • Phased Arrays vs Aperture Synthesis

Recent Comments

  1. What Is the Lichfield Radio Observatory – astronomy.network The Website of Lichfield Radio Observatory (LRO) on Latest Milky Way 1420MHz hydrogen map from Lichfield Radio Observatory (LRO) 2/12/2024 from data 6/1/2024-30/11/2024
  2. Fly-through of 3D plot of Milky Way Spiral Arms created using data from LRO 1, 2 and 3 radio telescopes from start of data collection to 17 August 2025 (extended 3D slices revised version 4 September 2025) – astronomy.network The Website of Lichfiel on Latest LRO 2D Map of Milky Way Arms 2 September 2025
  3. Fly-through of 3D plot of Milky Way Spiral Arms created using data from LRO 1, 2 and 3 radio telescopes from start of data collection to 17 August 2025 (extended 3D slices version 2 September 2025) – astronomy.network The Website of Lichfield Radio on Latest LRO 2D Map of Milky Way Arms 2 September 2025
  4. Admin on In Debian and its derivatives (like Ubuntu, Raspbian, etc.), there’s no official meta-package specifically for radio astronomy
  5. Ole Streicher on In Debian and its derivatives (like Ubuntu, Raspbian, etc.), there’s no official meta-package specifically for radio astronomy

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