Tag Archives: telescope

What is a radio telescope?

Many stars give off radio waves along with light on various spectrum. Astronomers are able to use large radio receiving dishes to collect and study these radio waves that are being sent out by the stars. Most people associate magnifying lenses and mirrors with telescopes but in the radio telescopes, the saucer shaped radio reflectors are the equivalent of the “mirrors”.

Radio telescope
Australian Radio Telescope Array in rural New South Wales. Mercury, Venus, and the Moon happened to be aligned above the array.

Radio telescopes allowed us to tune into distant stars, galaxies and celestial bodies that do not give off any visible light to be seen by optical telescopes. Radio telescopes also allow astronomers to “see through” other obstructions like clouds, cosmic dust and various gases found in space. The world’s largest single-aperture radio telescope is found at the SRI International operated Arecibo Observatory in Puerto Rico, and its bowl is 1,000 feet across.¬† The¬†Arecibo Observatory sustained some damage during a 6.4 magnitude earthquake on January 13, 2014 which required emergency repairs.


Looking at planets of the solar system with an amateur telescope

This video was taken by an amateur astronomer from Breclav in the Czech Republic. It is a nice compilation of amateur pictures, of various planets from the solar system including Juipter, Mars, Saturn and Venus. Also included are pictures of the International Space Stations (ISS), our Sun and Moon. The telescope used was a most likely the 10” Skywatcher Telescope N 250/1200mm.