Calculadora de Ampliação Barlow — Formula
## Barlow Lens Effect
A Barlow lens is a diverging lens placed before the focal plane that increases the effective focal length.
### Formulas
**f_eff = f * B**
**N_eff = N * B**
where B is the Barlow magnification factor (commonly 2x or 3x).
This narrows the FOV and increases the image scale, useful for planetary and lunar imaging.
A Barlow lens is a diverging lens placed before the focal plane that increases the effective focal length.
### Formulas
**f_eff = f * B**
**N_eff = N * B**
where B is the Barlow magnification factor (commonly 2x or 3x).
This narrows the FOV and increases the image scale, useful for planetary and lunar imaging.
Exemplo Resolvido
1000 mm f/10 scope with a 2x Barlow.
- f_eff = 1000 * 2 = 2000 mm
- N_eff = 10 * 2 = f/20