{"id":1,"date":"2022-05-31T10:21:13","date_gmt":"2022-05-31T10:21:13","guid":{"rendered":"https:\/\/radio.univie.ac.at\/?p=1"},"modified":"2026-07-06T13:57:44","modified_gmt":"2026-07-06T13:57:44","slug":"hello-world","status":"publish","type":"post","link":"https:\/\/radio.univie.ac.at\/?p=1","title":{"rendered":"The New\u00b9 Radio Telescope (NRT)"},"content":{"rendered":"\n
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\u00b9 but still small<\/strong><\/p>\n<\/div><\/div>\n\n\n\n

The Department of Astrophysics<\/a> operated a small radio telescope (SRT)<\/a> with 2,3 m dish size since 2005. In 2023 the dish size was updated to 4,5 m. The new radio telescope allows observations of the 21 cm line of neutral hydrogen, the observation of OH-maser emissions at 18 cm and continuum emissions within that two frequency bands. Installed on the institutes western terrace, it is used primarily by students during practical courses.<\/p>\n\n\n\n

First Light of the NRT<\/strong><\/h1>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n
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On the 5th<\/sup> of September 2023 the first successful observation was started at 20h00 local time, recording a transit<\/a> of the Milky Way Galaxy between galactic longitudes 87\u00b0 and 157\u00b0. A total of 4585 spectra each containing 326 data points in the frequency range from 1420,2 MHz to 1421,2 MHz were recorded in 12 hours and 30 minutes.<\/p>\n\n\n\n

Radio Telescope Control Software<\/strong><\/h1>\n\n\n\n
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The software is completely open source and may be used by everyone for free. It not only allows you to control the radio telescope over the internet, it also provides a simulator plugin to conduct observations without any connection to a real telescope.<\/p>\n\n\n\n

Windows Installer<\/h3>\n\n\n\n
radtel-x86_64-0.0.49<\/a>Download<\/a><\/div>\n\n\n\n

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Source Package Snapshot<\/h3>\n\n\n\n

GitHub repository<\/a><\/p>\n\n\n\n

radtel-src-v0.0.49<\/a>Download<\/a><\/div>\n\n\n\n

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Building and Installation Instructions for OSX<\/h3>\n\n\n\n
HOWTO_OSX<\/a>Download<\/a><\/div>\n\n\n\n

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Simulator Data Package<\/h3>\n\n\n\n
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The simulator uses data from the HI survey<\/a> from the Max Planck institute for radioastronomy<\/a>. It contains the northern and southern hemisphere in a spectral range of +-400 km\/s around the hydrogen line.<\/p>\n\n\n\n

sky_vel.dat<\/a>Download<\/a><\/div>\n\n\n\n

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NOTE:<\/strong> Please extract file before use. On Windows, the data must be placed in the base installation directory (usually C:\\Program Files\\radtel), NOT in the bin\/ subdirectory! On Linux\/OSX the data must be placed in the directory the server\/simulator is executed from, e.g. your home directory.<\/p>\n\n\n\n

Documentation<\/strong><\/h1>\n\n\n\n

Control Software for Small Radio Telescopes<\/a> (English)<\/p>\n\n\n\n

Installations- und Bedienungsanleitung<\/a> (Deutsch)<\/p>\n\n\n\n

Beobachtungen im Radiobereich<\/a> (Deutsch)<\/p>\n\n\n\n

Hardware Overview<\/a> (English)<\/p>\n\n\n\n

Electromagnetic Interference in Radio Astronomy<\/a> (English)<\/p>\n\n\n\n

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Current Solar Radio Flux Data<\/strong><\/h1>\n\n\n\n

This data is a mirror of https:\/\/services.swpc.noaa.gov\/text\/current-space-weather-indices.txt<\/a> from the Space Weather Prediction Center, National Oceanic and Atmospheric Administration, https:\/\/www.swpc.noaa.gov\/<\/a><\/p>\n\n\n\n

It allows you to calibrate the radio telescope using the sun as a reference.<\/p>\n\n\n\n