Bob Moler's Ephemeris Blog

Ephemeris for Monday, July 2nd.  Today the sun will be up for 15 hours and 28 minutes, setting at 9:30.   The moon, 1 day before full, will set at 5:56 tomorrow morning.  Tomorrow the sun will rise at 6:02.  |  Where astronomical telescopes are concerned the general rule is the bigger the better.  By bigger I mean wider.  The larger diameter of a telescope allows it to gather more light and resolve finer detail.  These monsters have grown to be 10 meters in diameter with even larger ones in the planning stage.  At the other end is the KELT North Telescope, one of a pair of telescopes stationed north and south of the equator.  They use an 80 millimeter diameter telephoto lens to scan the sky in big chunks looking for exoplanets by the transit method, detecting the dimming of light of stars by an intervening planet, like our transit of Venus last month.  The KELT North Telescope has found two of them so far.

Times are for the Traverse City/Interlochen area of Michigan.  They may be different for your location.