NOVAC’s Byron Bergert Imaging Group will hold its Not-a-Leap-Year Processing Party online on Saturday, February 27 from 10am to 1pm. As our planet’s satellite moves into its springtime prime, when the first-quarter moon will ride high in the sky, this seemed like a good opportunity to take a step sideways from our usual focus on deep sky astrophotography to do a session on lunar imaging. Our Special Guest Processor for this meeting is Tom Glenn, a skilled lunar and planetary photographer who lives in San Diego. You may be familiar with Tom’s work from his fantastic APOD of the International Space Station transiting Mars, but if you look at Tom’s Flickr site you’ll quickly see that he’s equally talented at lunar imaging, and in fact he earned his first APOD for that work. Tom images the moon with a 9.25” Celestron SCT and an ASI183 camera.
We’ll be holding this meeting online via Google Meet. Follow the link below to join the meeting (you can dial in for audio only):
PIN: 891 623 500#
We’ll open the connection about 10 minutes before the meeting time.
The Mysterious Great Dimming of Betelgeuse
Dr. Andrea Dupree, Center for Astrophysics | Harvard & Smithsonian
Sunday, March 14, 2021
7:30 PM to 9:00 PM EST
The bright cool supergiant Betelgeuse became historically faint a little over one year ago in early February 2020. Various explanations have been offered for its unusual behavior – including conjectures this foreshadows an imminent supernova event. Direct imaging, spatially resolved spectroscopy, polarization measures, infrared, optical and ultraviolet spectra and more help us to unravel what happened to the star. The current state of the star as well as new results from spectroscopic observations with HST will be reported in advance of the next optical minimum expected this spring.
Andrea Dupree is an astrophysicist and currently the Head of the Solar, Stellar, Planetary Sciences Division at the Center for Astrophysics | Harvard & Smithsonian in Cambridge, MA. This is the largest research institute for astronomy and astrophysics in the world. She is also a past-President of the American Astronomical Society. Her research interests focus on stars and how they form and evolve, particularly employing spectroscopic techniques for analysis. Andrea has been studying Betelgeuse for a long time – especially from satellites to observe the ultraviolet radiation from the outer layers of the star. She led the team that obtained the first image of a star other than the Sun – Betelgeuse – using the Hubble Space Telescope.