What is Astrophotography? Astrophotography, or astronomical photography, is basically photography of the sky. The aim is usually to create “nice” photos, rather than photos for scientific purposes. The “niceness” of the photo is open to interpretation, and up to what the creator feels is a nice-looking photograph.
Light, or optical, detectors are used in Optical Astronomy. They allow us to explore the universe using electro-magnetic waves emitted by distant objects. Optical Astronomy is only one branch of Astronomy, other branches being Radio, Microwave, Infrared, Ultra-Violet, X-Ray, Gamma Ray, Neutrino, Cosmic Ray and Gravitation Wave Astronomy. This article describes how light is detected by several devices.