DIY Solar Filter (for Telescopes and Cameras)

Solar astronomy can be a very rewarding (if often overlooked) area in astronomy, especially with events like the Great American Eclipse (August 21st) around the corner. However, because of the inherent danger or looking in the direction of the Sun, special precautions have to be taken – using a less...
By: Mercurion925

Continue Reading »

from Instructables: exploring - featured http://ift.tt/2uCJbmV
via IFTTT