Why can’t I see any light coming through my telescope?

October 7, 2008

If you can’t see any light coming through your telescope, check to be sure your tube cap or lens cap is removed. This is the plastic or metal cover over the front end of the tube that is the same diameter as the tube. (On some models, this cap may have a smaller cap on it as well.) Next, look at the tube that holds the eyepieces (at the back of the telescope in refractor lens-type telescopes, in the front for reflector mirror-type telescopes). Remove any caps in the tube. At this point, you should be able to see light coming through this eyepiece drawtube.


Updated 12/25/13