Friday 18 August 2023

The Great Square of Pegasus

 

This is another asterism that is visible in the eastern sky after dark at the moment. Alpha has apparent magnitude 2.48, beta is 2.42 and gamma is 2.78 so they are well matched. The other corner actually belongs to the constellation Andromeda. They are all named in Arabic. My book says that a good test for visibility is to count the number of visible stars inside the square, with a dozen being a good number. Looks like the camera was doing well that night. The reflection of the orange street light on the telegraph pole has come out well.