Observing the night sky can be done with no special equipment, although a sky map can be very useful, and a good telescope or binoculars will enhance some experiences and bring some otherwise ...

We have two illustrations to help visualize the planetary alignment: 1. An annotated night sky map showing the planets' positions. Circled planets indicate those that are not visible without equipment ...

Bortle in 2001, measures night skies on a scale from the darkest to the most light-polluted. As this light pollution map shows ... In 2009, the International Dark-Sky Association designated ...