Calculating the Cosmos: A Guide to Using an Astro FOV Calculator**
The field of view (FOV) is the angular diameter of the sky that can be seen through a telescope or binoculars, usually measured in degrees or arcminutes. It’s an essential parameter to consider when observing celestial objects, as it determines how much of the sky you can see and what objects you can fit within your view.
Let’s say you have a telescope with a focal length of 1000mm and an eyepiece with a diameter of 20mm. Using an astro FOV calculator, you input the values and get a calculated FOV of 1.2°.
