Calculadora de Campo de Visão do Sensor da Câmera
Calcule o campo de visão do sensor da câmera para astrofotografia.
Field of View
1.3464 deg
Field of View vs Sensor Dimension
Formula
## Camera Sensor Field of View The angular field of view determines how much sky the sensor captures. ### Formula **FOV = 2 arctan(d / 2f)** - *d* = sensor dimension (width or height) in mm - *f* = telescope focal length in mm Convert from radians to degrees by multiplying by 180/pi.
Exemplo Resolvido
APS-C sensor (23.5 mm width) on a 1000 mm focal-length scope.
- 01FOV = 2 * atan(23.5 / 2000)
- 02FOV = 2 * atan(0.01175)
- 03FOV = 2 * 0.01175 rad = 0.02349 rad
- 04FOV = 0.02349 * 180 / pi = 1.346 degrees
Perguntas Frequentes
Should I use sensor width or height?
Calculate both. The width gives the horizontal FOV, the height gives vertical FOV. The diagonal gives the total angular coverage.
How does a focal reducer affect FOV?
A focal reducer shortens the effective focal length, widening the FOV. A 0.63x reducer on a 1000 mm scope gives 630 mm effective.
What FOV is ideal for deep-sky imaging?
It depends on the target. Large nebulae need a wide FOV (over 1 degree); small galaxies and planetary nebulae suit narrow FOVs (under 0.5 degrees).