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astronomy.me.uk The Website of Lichfield Radio Astronomy Observatory (LRO)

Astronomy observatory in Staffordshire, England.

astronomy.me.uk The Website of Lichfield Radio Astronomy Observatory (LRO)

Astronomy observatory in Staffordshire, England.

  • Live feeds at Lichfield Radio Observatory (LRO)
  • Calculators
  • Telescopes & Associated Equipment at Lichfield Radio Observatory
  • History and description of Lichfield Radio Observatory (LRO)
  • Publications & Presentations
  • Links to other observers’ SID monitoring sites
  • SHOOS – SARA Hydrogen-Observing Overall Survey
  • Contact me
Uncategorized

Comparison between HP ProDesk 405 G2, G3, and G4 Mini computers

Admin August 3, 2025 No Comments

The HP ProDesk 405 G2, G3, and G4 Mini are successive generations of small form factor business desktop PCs. The main differences between them involve processor generation, chipset improvements, graphics…

Uncategorized

Specification of latest HP Prodesk 600 G4 i5 miniPC purchased from ebay.

Admin August 1, 2025 No Comments
Uncategorized

HP Mini 600 G4 isn’t detecting the Ubuntu installation after reboot.

Admin August 1, 2025 No Comments

It sounds like your HP Mini 600 G4 isn’t detecting the Ubuntu installation after reboot — a common issue that can happen due to: ✅ Immediate Diagnostic Steps 1. Check…

Windows

To completely reset your HP Mini 600 G4 and remove all traces of BitLocker, Windows, and old partitions.

Admin August 1, 2025 No Comments

To completely reset your HP Mini 600 G4 and remove all traces of BitLocker, Windows, and old partitions, you can fully wipe the internal drive using a Live Ubuntu USB.…

Attending & talking at conferences, workshops & societies

European Astrofest 2026 dates

Admin July 31, 2025 No Comments

Kensington Conference and Events Centre, The Town Hall, Hornton Street, London, W8 7NX Opening times Friday 6th February 2026: 9am – 6pm Saturday 7th February 2026: 9am – 6pm

Radio observation in hydrogen line (1420MHz)

Why M57 is a poor radio astronomy target for amateurs using H-Line radio telescopes

Admin July 31, 2025 No Comments

In short: no prominent absorption line in Messier 57 is known near the 21 cm hydrogen line (1420.4058 MHz). However, let’s break that down in detail — because what you’re really asking…

Windows

How to force the Handbrake app in Windows to use MP4 with H.265 and retain your audio quality

Admin July 30, 2025 No Comments

If H.265 (x265) in HandBrake is defaulting to MKV instead of MP4, it’s because some video/audio combinations aren’t supported in MP4 containers. Here’s how to force MP4 with H.265 and…

Windows

Options available in Windows 11 for resizing MP4 video files in a batch

Admin July 30, 2025 No Comments

For Windows 11 and resizing MP4 video files in batch, here are your best options: ✅ Option 1: FFmpeg (Recommended – Powerful & Free) Step-by-Step: This will: 🔧 You can…

GNU Radio

Performance comparison for FFT-based correlation of a 1,000,000-sample dataset for variety of computers with different specifications

Admin July 30, 2025 No Comments

Here’s a performance comparison for FFT-based correlation of a 1,000,000-sample dataset, using your original reference system (i5-6500, 8GB) and several upgraded configurations, including newer 12th-gen Intel CPUs. ⚙️ Test Overview…

Uncategorized

Standalone Python script to generate two synthetic signals and performs FFT-based correlation.

Admin July 30, 2025 No Comments

Here’s a standalone Python script you can run on your Linux system later. It generates two synthetic signals, performs FFT-based correlation, and saves the result to a timestamped .npy file…

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Categories

  • ADVISORY NOTICE & DISCLAIMER
  • Aerials & Antennae
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  • Testing radio astronomy equipment
  • The 20 Metre Skynet Radio Dish at Green Bank Observatory
  • Uncategorized
  • USRP B210 Software-Defined Radio
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Recent Posts

  • Wind damage to LRO-H3
  • Online interdigital RF cavity filter designer
  • Alex Pettit’s new RFI removal regime in H-Line 3D
  • Tell me what a SID (Sudden Ionospheric Disturbance) is and what range of frequencies are covered when monitoring for SIDs.
  • Are there disadvantages of using SAWBird H1 vs Cavity filter?

Recent Comments

  1. Admin on Signal attenuation (loss) for common coaxial cables at around 1.42 GHz (1420 MHz), relevant for builders of amateur Hydrogen Line radio telescopes.
  2. Alex Pettit on How can a 50 ohm resistor be used to produce reference signal on a radio telescope with 50 ohm impedance?
  3. Alex Pettit on How can a 50 ohm resistor be used to produce reference signal on a radio telescope with 50 ohm impedance?
  4. Bill S.N. on How can a 50 ohm resistor be used to produce reference signal on a radio telescope with 50 ohm impedance?
  5. Stephen Arbogast on How can a 50 ohm resistor be used to produce reference signal on a radio telescope with 50 ohm impedance?

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You missed

Uncategorized

Wind damage to LRO-H3

Uncategorized

Online interdigital RF cavity filter designer

Uncategorized

Alex Pettit’s new RFI removal regime in H-Line 3D

Uncategorized

Tell me what a SID (Sudden Ionospheric Disturbance) is and what range of frequencies are covered when monitoring for SIDs.

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astronomy.me.uk The Website of Lichfield Radio Astronomy Observatory (LRO)

Astronomy observatory in Staffordshire, England.

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