Knowing the field of view of a CCD camera or image chip on a certain telescope is important when selecting targets for imaging.  It is also a useful way of comparing cameras or combinations of cameras and telescopes.  Pixel size factors into the resolution obtainable with a given setup and is one way to match an appropriate camera and telescope. Not all telescope/camera combinations may actually work, but the calculator will let you make any combination.

Select a CCD camera and telescope from the below pulldown menus.  You can then see what the pixel resolution abd field of view will be.  The binning can be changed to see the effect this has on pixel resolution. 
CCD Camera:
Telescope:
   or Enter User Defined Focal Length:
Pixel Binning:

Pixel Size:

Field of View Width:
  Height: