astronomy.network The Website of Lichfield Radio Observatory (LRO)
Andrew Thornett, Lichfield, England, M6THO, andrew (at) thornett (dot) net
Initial data analysis from third Milky Way mapping exercise with LRO-H1 & LRO-H2 – 15/2/2025.
So far, only 4 elevations on both radio telescopes. Difference between this data and previous data is that each data
Read moreSKAO Making Hydrogen Line (1420.405 MHz) Radio Telescopes from readily available household materials, seen at Astrofest 6 Feb 2025
I was very impressed with this very well developed project presented by SKAO on their stand at European Astrofest February
Read moreBlock diagram of hydrogen line (1420 MHz) radio telescope
I prepared this diagram of 1420 MHz telescope. Andy
Read moreCake Pan and Aluminium Flashing Design for Making Cantennae
Alex Pettit, of SARA, has recommended a design for making a cantenna based on using aluminium roof flashing wraped in
Read moreCalculating focal point of parabolic mirrors using string method:
click on link below for instructions: https://www.astronomy.me.uk/wp-content/uploads/2025/02/Calculating_patabolic_dish_focal_point_2024.pdf
Read moreAdvice on how to build and test the feed for LRO-H2(SCRT)from SARA Member, Don Latham AJ7LL, on SARA RTOP 2/2/2025, with extra information added from other members:
There have been many expert and knowledgeable comments about cantenna feed design on this group and on the SARA RTOP
Read moreCantenna Design 1420 MHz
Website recommended by Alex Pettit: https://www.changpuak.ch/electronics/cantenna.php
Read moreHow to design an effective 1420 MHz waveguide from ChatGPT
To design an effective waveguide for 1420 MHz (21 cm hydrogen line), you need to consider several factors, including waveguide
Read moreProcessing LRO-H2(SCRT) Data collected over two days 27-28 January 2025 by ezCol in ezRA software suite, using 1400-1427MHz Cavity Filter, Nooelec SAWBird H1 LNA, KMR 400 coaxial cable, and RTL-Blog V3 Software Defined Radio; reference frequency 1422 MHz, Bandwidth 1.000, Integration of 1,100,000 samples. Processing on 30/1/2025.
Click on links below to download data: ezCol .txt data files https://www.astronomy.me.uk/wp-content/uploads/2025/01/data-300125.zip SDR Sharp data generated from conversion of above
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