Real-Time Galactic Neutral Hydrogen Signals HI Detection: “Probing the 1.42 GHz, 21-cm Line” with Fabricated Conical Horn Radio Astronomy Telescope
PreprintTechRxiv2025
First public:
- Astronomy & instrumentation
Research summary
This preprint describes a fabricated conical horn antenna and an experimental setup for observing Galactic neutral-hydrogen emission at the 21-cm line. It presents the antenna design, receiving chain, and measurement procedure as an accessible radio-astronomy instrument, with potential uses in education and further instrumentation development.
Extended notes
The instrument combines a horn antenna, preamplification, and spectral measurements. The study focuses on an accessible setup for observing neutral-hydrogen emission and supporting educational radio astronomy.