Field of View Calculator
Calculate your imaging field of view based on camera sensor and telescope/lens focal length.
Camera Sensor
Optic
FOV Preview
Andromeda Galaxy (M31) (3.2° × 1.0°)
Your FOV (2.69° × 1.80°)
Sky: 3.2° across
Formula Reference
FOV = 2 × arctan(sensor / (2 × focalLength)) × 57.3
Pixel Scale = 206.265 × (pixelSize / focalLength)
Where FOV is in degrees, sensor dimensions in mm, focal length in mm, and pixel size in micrometers.