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18 April 2022, David Blane I recently participated in a mammoth international collaboration to improve our understanding of the enigmatic multi-star system, QZ Carinae. I am pleased to report that the paper has been accepted by Astronomy & Astrophysics and will be published in due course. This is the third publication on this eclipsing binary […]
March 2020, Kos Coronaios C/2020 F3 (NEOWISE) or Comet NEOWISE is a long period comet with a near-parabolic orbit discovered on March 27, 2020, by astronomers during the NEOWISE mission of the Wide-field Infrared Survey Explorer space telescope. At that time, it was an 18th-magnitude object, located 2 AU (300 million km; 190 million mi) […]
27 December 2021, Kos Coronaios The image below is a stack of 24 x 40 seconds with EF200mm lens working at f2.8, taken on the 27 Dec 2021
28 December 2021, Tim Cooper Discovered on 3 January 2021 by Greg Leonard at Mount Lemmon Observatory, the comet was expected to be the brightest comet of 2021, and was predicted to peak at about magnitude 4 around closest approach to Earth on December 18. After that it was expected to fade as it became […]
21 January 2022, Kos Coronaios I haven’t had much luck with documenting all the outbursts and tail disconnection events with comet A1 Leonard since it was visible from our part of the world. Cloudy skies was the main culprit, but I was fortunate enough though in imaging the separation of the dust and ion tail […]
Tim Cooper1 and Kos Coronaios2 1 Comet, Asteroid and Meteor Specialist, Astronomical Society of Southern Africa 2 Director of Observations, Astronomical Society of Southern Africa Summary A bright bolide (South African Fireball Catalogue (SAFC) #316) was widely seen over the Western Cape at 20h14m53s SAST on 2019 January 16. It exploded at an altitude of […]