The easiest way to focus a telescope is by moving the eye piece and changing the spacing between optical elements. Find out different ways to focus a telescope, such as moving the mirrors themselves, with help from an astrophotographer in this free video on astronomy and telescopes.
Expert: Billy Teets
Contact: www.dyer.vanderbilt.edu/
Bio: Billy Teets is a third-year graduate student in physics, with an emphasis on astronomy, at Vanderbilt University.
Filmmaker: Dimitri LaBarge
the first is a Newtonian telescope the mount is called a dobsonian
MrJordanflys 9 months ago
my god the lucky you have to get a jewelry like this in your hand . i think you know this ! and i really hope you use it for UFO some times !!!!!
i really hope this !
My god ! lucky man ! ;)
SKYSURVEYOR 2 years ago