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Cantenna Design for Hydrogen Line Observations
A cantenna, essentially a form of circular waveguide, is a practical tool used in radio astronomy to detect the hydrogen line (1420.405 MHz). Here’s a comprehensive overview of its design…
Testing coaxial relay & internal resistor in Nooelec SAWBird H1 Barebones LNA 04/01/26
This was a test inside house so hydrogen signal not detected.
Nooelec SAWBird H1+ Premium Low Noise Amplifier and 1420 MHz (Hydrogen Line) Filter Barebones Version Datasheet
Datasheet can be downloaded from link below – this was accessed 4/1/2026: https://www.astronomy.me.uk/wp-content/uploads/2026/01/Nooelec_Sawbird_H1_Barebones_Datasheet_Revision_1040126.pdf
Using large 4-5 metre mesh dishes for hydrogen line radio astronomy
These mesh dishes are certainly fine for the Hydrogen line and are probably good up to about 3 or 5 GHz. If you want to learn more about the performance…
Cantenna Design for Hydrogen Line Observations
A cantenna, essentially a form of circular waveguide, is a practical tool used in radio astronomy to detect the hydrogen line (1420.405 MHz). Here’s a comprehensive overview of its design…
Internet resources on hydrogen line radio astronomy
Here are some good internet resources — guides, tutorials, and reference material specifically useful for getting into hydrogen-line (21 cm, ~1420 MHz) radio astronomy: 📘 Amateur & Practical Guides •…
What is a Power User?
A power user is someone who uses a product, system, or piece of software far beyond basic or casual use, taking advantage of its advanced features, shortcuts, customizations, and integrations…
How starquakes allow astronomers to determine a star’s age
Astronomers determine a star’s age using starquakes through a technique called asteroseismology. The basic idea is that a star’s internal structure changes in a predictable way as it ages, and…
Comparing H-Line Cantenna Dimensions different diameters of the can
Key messages from above table: The probe length does not change with cantenna diameter at the same design frequency. The overall can length goes down with increase in diameter. The…