#washeißtdaseigentlich — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #washeißtdaseigentlich, aggregated by home.social.
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𝐑𝐚𝐝𝐢𝐨 𝐭𝐞𝐥𝐞𝐬𝐜𝐨𝐩𝐞 𝐠𝐥𝐨𝐬𝐬𝐚𝐫𝐲: Technical terms relating to radio telescopes 📡
📡 𝐏𝐚𝐫𝐚𝐛𝐨𝐥𝐢𝐜 𝐌𝐢𝐫𝐫𝐨𝐫 is the massive “dish” that collects radio waves, reflects them in parallel, and focuses them onto a single point – the focal point.
📍 𝐏𝐫𝐢𝐦𝐚𝐫𝐲 𝐅𝐨𝐜𝐮𝐬 𝐂𝐚𝐛𝐢𝐧 serves as the base for data collection and acts as the focal point where incoming radio waves are concentrated. At Effelsberg, several receivers are installed - depending on the frequency range - in either the primary or secondary focus cabin.
🎯 𝐅𝐨𝐜𝐚𝐥 𝐏𝐨𝐢𝐧𝐭 is the spot where all light or radio waves reflected by a convex lens or parabolic mirror converge.
📶 𝐑𝐞𝐜𝐞𝐢𝐯𝐞𝐫 converts radio waves into measurable data for scientific research. Its main task: to amplify the extremely weak signals from space just enough to make them detectable.
❄️ 𝐂𝐨𝐨𝐥𝐢𝐧𝐠 is necessary to reduce the noise generated by the receivers themselves, they are cooled. Using helium as a coolant, extremely low temperatures of around -260° Celsius can be reached.
🎛️ 𝐄𝐥𝐞𝐯𝐚𝐭𝐢𝐨𝐧 𝐚𝐧𝐝 𝐀𝐳𝐢𝐦𝐮𝐭𝐡 describe how a (radio) telescope is aimed:
⬆️⬇️ Elevation = up and down
⬅️➡️Azimuth = left and right
Both values are given in degrees.