Detecting Cassiopeia A with a 3 metre backyard radio telescope скачать в хорошем качестве

Detecting Cassiopeia A with a 3 metre backyard radio telescope

Cassiopeia A is a supernova remnant located at a distance of 11000 light years in the constellation Cassiopeia. Once a blue giant star far more massive and luminous than the Sun, all that remains after its spectacular end as a supernova is a very faint and rapidly expanding nebula. The light of the supernova reached the Earth in the late 1600s, but there are no confirmed sightings of the supernova from this time period. Perhaps it was heavily obscured by interstellar gas and dust. Cassiopeia A is also one of the strongest continuum (broadband) radio sources in the sky, at about 1670 Jansky at 1400 MHz. So how easy would it be to detect with a 3-metre backyard radio telescope? Not so easy, as it turns out, but it is still a fun and challenging observation project! As a bonus result two more radio sources were detected during the search for Cassiopeia A, which are tentatively identified as the emission nebulae IC 1396 and IC 1805. Sources: https://britastro.org/section_informa... https://en.wikipedia.org/wiki/Cassiop... “The 3 metre dish at the “Astropeiler Stockert” part 2: characterisation and observations”, W. Herrmann (https://astropeiler.de/wp-content/upl...) Total_power programme by Mario Natali I0NAA: https://i0naa.altervista.org/index.ph... Dwingeloo 820 MHz survey (IRAP/CADE/Aladin Sky Atlas)