The Seasons

The classic diagram of Earth's tilt throughout the year helps you visualize why the sun gets so high in the sky during summer and low in the winter.

Photographing the Analemma

An explanation of the process I went through to photograph this year-long project. Includes a diagram of all the dates I made exposures.

Lunar Eclipse

Diagrams of lunar eclipse stages along with how to interpret eclipse maps. Includes a map of the next total eclipse that will occur in the U.S.

Navigating The Sky

Simple ways to measure angles and degrees in the sky and use azimuths and compass directions for finding your way around the heavens.


The light of the sun and moon have more in common than you might think. This is evident in photographs made by moonlight.

All images are copyrighted by Frank Zullo. Please do not use without written permission.