Building An Open Source SDR Based Hydrogen Line Radio Telescope

Software Defined Radios of all Types
User avatar
United States of America Bubbathegimp
Site Admin
Site Admin
Posts: 1626
Joined: Sun Jan 12, 2014 10:18 pm
Location: Off Plumb

Building An Open Source SDR Based Hydrogen Line Radio Telescope


Post by Bubbathegimp »

Over on Reddit we've seen a post by u/ArtichokeHeartAttack who has been working on a hydrogen line radio telescope, based on an RTL-SDR dongle and horn antenna designs by the DSPIRA program, and the Open Source Radio Telescopes website (site appears to be down, linked to the copy). [u/ArtichokeHeartAttack] has documented their radio telescope building journey, providing a comprehensive top-level document that is able to point interested people in the right direction towards understanding and building their own Hydrogen line radio telescope. Briefly, their build consists of a horn antenna and reflector designed for the 1,420.4 MHz Hydrogen line frequency. The horn is built out of a few pieces of lumbar, metallic house wall insulation sheets and aluminum tape. The feed is made from a tin can and piece of wire. In terms of radio hardware, they used an Airspy SDR, GPIO labs Hydrogen Line Filter + LNA, and 2x Uputronics Wide band preamps, and a Minicircuits VBF-1445+ filter. For software processing, they used a GNU Radio flowgraph to integrate and record the spectrum. The results show that they were able to achieve a good hydrogen line peak detection, and they were able to measure the galactic rotation curve doppler shift, and tangent points which prove that we do in fact live in a spiral galaxy. ImageThe Finished Hydrogen Line SDR Based Horn Radio Telescope Antenna

Source: ... telescope/
If you can read this,
You probably didn't go to school in Delaware

Who is online

Users browsing this forum: No registered users and 0 guests