Archive for August 14, 2017

08/14/2017 – Ephemeris – Safe ways to view the eclipse

August 14, 2017 1 comment

Ephemeris for Monday, August 14th. The Sun rises at 6:44. It’ll be up for 14 hours and 4 minutes, setting at 8:49. The Moon, at last quarter today, will rise at 12:46 tomorrow morning.

It is one week to the Great American Eclipse, next Monday August 21st. Whether you’re heading out to the path of totality, or staying here it is imperative that you view the Sun safely. Solar filters may be purchased from some reputable stores. But there are some unsafe solar filters being sold out there. Beware. Also never use eclipse glasses to view the Sun with binoculars. The concentrated sunlight coming out of the eyepiece will burn through the plastic of the solar filter in an instant. The best method is to project the Sun’s image with a pinhole in a box or place a mirror in an envelope with a quarter-inch or so hole in it, and project the Sun on the shady side of a building. There’s plenty of Internet links at

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


Two pinhole solar projection methods

Two pinhole solar projection methods. Credit NASA.

The danger at looking at the Sun without proper filter

The danger at looking at the Sun without proper filter. Credit: University of Waterloo.