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Star gazing, craning our necks to the heavens, is the original source of wonder. This awestruck observation is at the root of this print project. Astronomer John Herschel—noted for coining the term “photography”—invented the cyanotype process in 1839. It is synchronistic that Ebtekar chose the Cyanotype process for this project as imagery for this print was culled from the NASA archive.

Equation Of Time employs a conceit of poetic simplicity: An image of the cosmos / Brought to life by the light of the cosmos / The very thing it describes. The NASA image of the night sky, printed as a …