A spectacular sight is coming up this year for much of the U.S. The August 2017 total solar eclipse is on its way and it’s in your best interest to prepare to see it right now. Here are a few good tips on planning an unforgettable vacation to see one of nature’s great wonders. Plan...

 WHERE WILL YOU BE FOR THE MERCURY TRANSIT? WHEN: MONDAY, MAY 9TH 2016 Where: The above map outlines the areas of the world where the Transit will be visible. (courtesy of Fred Espenak) For more information about the Transit of Mercury from Fred Espenak (Mr. Eclipse) visit: http://www.eclipsewise.com/oh/tm2016.html This event will be the Transit of Mercury (Our...

Lunt Solar do not use central obstruction sun filters for telescopes.. Here are a few reasons why. The challenge to early etalon sun filter making was to figure out how to re-produce a ultra high precision flat on a mass production scale. Typically etalon sun filters required a clear aperture for laser and imaging work....