ABSTRACT
Astrophotographers have many specialities to pursue but in the main, the images that adorn the multitudinous websites consist of stars, special events, planets and deep sky objects. This chapter and the next few give an astronomical grounding in the various objects in space and the systems we use to characterize, locate and measure them. It is not essential to understand astronomy to obtain good pictures, but I think it helps to decipher the lingo and adds to the enjoyment and appreciation of our own and others’ efforts.
