July 1, 2020
Almost Touch the Stars- Spectroscopy
Presented by Tom Field
Contributing Editor at Sky & Telescope Magazine
Author of RSpec Software
Even if you wanted to touch a start, they are all impssibly distant, Despite these great differences, astronomers have learned an enormous amount about stars. How? The most common method to study the stars is spectroscopy which is the science of analyisng the colorful rainbow spectrum produced by a prism-like device.
Until recently, spectroscopy was too expensive and too complicated for all but a few amateurs. Today, new tools make spectroscopy accessible to all of us. You no longer need a PhD, dark skies, long exposures, enormous aperture or a big budget. With your current telescope and a FITS camera (or a simple webcam or even a DSLR without a telescope) you can easily study the stars yourself. You could detect the atmosphere on Neptune or teh red shoft of a quasar right in your backyard.
This talk will show you what it’s all about and help your understand how specctroscopy is used in research. There will be lots on interesting examples. Even as an armchair astronomer, understanding this field will enhance your understanding of the things you read about the night sky. There will be an open Q & Q after the 45 minute presentation.
Meeting will be conducted virtually. Directions will be sent to CAS Members.