FOV Calculator

Hi folks,

Last night i came across an extremely useful site for amateur astronomers/astrophotographers who are starting out but don't know exactly what equipment to buy. You might know what telescope you want, but are not sure exactly which camera to get (CCD or DSLR); or perhaps you already have a DSLR camera and want to acquire a telescope.
Because the question is: what will be my Field Of View ? In other words what exactly will you see using your combination of camera and telescope. This of course also depends on what objects you plan to capture.
The below website allows you to select from a variety of telescopes, cameras and then select the celestial object from a database (Object menu) and it will show the FOV and also the portion of the image you can see with the given combination. You can also simulate adding Barlows or Focal reducers.
Very nice !!

The link:

http://www.skyatnightmagazine.com/field-view-calculator

Cheers !