A CaK telescope is designed for observing the Sun in the Calcium K wavelength of light. The Calcium K line is a specific spectral line in the solar spectrum produced by ionized calcium (Ca II) atoms in the Sun’s chromosphere. It is located at approximately 393.4 nanometers (nm) in the […]
Are two eyes better than one? In the case of binoculars – with their ease of use and portability when observing the Sun – using both eyes is just the ticket. And if you already have a pair of binoculars sitting around the house, then with the proper filters you […]
By Eric Gentry Solar glasses typically need to meet two constraints: You need something which will block most of the light, and you need something that can provide structural support, so it won’t fall apart while you’re staring at the sun. Thanks to modern chemistry, most of the ‘solar eclipse […]
Want to view the August 21 Solar Eclipse through a $5,000 solar telescope? Or perhaps use a high end deep-sky telescope outfitted with the latest high-end solar filter? Of course, the answer is “sure!” and of course, most of you reading this have no intention of going out and buying […]
The Total Solar Eclipse on August 21 is going to be one of the most anticipated and participated astronomical events in the last 50 years. And the good news is that you don’t have to have any special equipment to actively participate in the Eclipse. With basic household items or […]
Written for the first-time solar eclipse viewer, the 2017 Great American Solar Eclipse Primer offers topics and tips on viewing and imaging the eclipse without a telescope. The book was written by Anthony Galvan III (Tony) whose photographs and technical illustrations have been published by Astronomy and Sky & Telescope […]
Eclipse Safari is a comprehensive and interactive guide to the August 21, 2017 Total Solar Eclipse of the Sun, visible along a narrow path spanning the USA from the West coast to the East coast. It’s a free app developed by the makers of the SkySafari 5 astronomy app in […]
Astronomy Technology Executive Editor Gary Parkerson is traveling over 10,000 miles and will visit all lower 48 states to generate awareness of amateur astronomy and the viability of cycling for transportation. The Pedaling Astronomer project is an educational effort to generate awareness and to promote: (1) the hobby of amateur […]
The Great Solar Eclipse of 2017 is one of the most anticipated astronomical events in recent memory. For the editors and staff of Astronomy Technology Today, the event has provided the opportunity to focus each magazine issue leading up to the event on solar products, services and techniques. We recently […]
The Solar Eclipse Timer app will put you front and center of the Great American Solar Eclipse 2017 which will cross the United States on August 21, 2017. The app calculates what you can see from the eclipse from any spot in the eclipse’s path with just a two-tap set […]
By Gary Parkerson, Managing Editor Astronomy Technology Today If you live on the mainland U.S., and you are at all like me, you’re already counting the seconds until the August 21, 2017, total eclipse of the Sun … as in, there is literally a countdown timer in the corner of […]
The 2017 Total solar eclipse on August 21 promises to be a once in a lifetime event and many people will lean heavily on their smartphones to participate in the eclipse. In our article – Using a Smartphone to Photograph the 2017 Total Solar Eclipse – we covered a number […]