Observing within The Summer Triangle. There are a number of fine objects to observe here. This asterism consists of three bright stars in three constellations – Deneb in Cygnus, Vega in Lyra and Altair in Aquila. When the Summer Triangle is high overhead in the early evening, it is an indication that summer is ending and autumn or fall is beginning.
An animation of the Cepheid variable star M31-V1, as photographed from the Shasta Valley Observatory.
