Calculadora de Resolução do Telescópio — Formula
## Telescope Angular Resolution
### Dawes Limit (empirical, for equal-brightness stars)
**theta = 116 / D** arcseconds (D in mm)
### Rayleigh Criterion (diffraction-limited at 550 nm)
**theta = 138 / D** arcseconds
Smaller is better. A 200 mm telescope resolves about 0.58 arcsec. Atmospheric seeing typically limits ground-based resolution to about 1-2 arcsec.
### Dawes Limit (empirical, for equal-brightness stars)
**theta = 116 / D** arcseconds (D in mm)
### Rayleigh Criterion (diffraction-limited at 550 nm)
**theta = 138 / D** arcseconds
Smaller is better. A 200 mm telescope resolves about 0.58 arcsec. Atmospheric seeing typically limits ground-based resolution to about 1-2 arcsec.
Exemplo Resolvido
A 200 mm (8-inch) telescope.
- Dawes: 116 / 200 = 0.58 arcsec
- Rayleigh: 138 / 200 = 0.69 arcsec
- This can split double stars separated by 0.6 arcsec on a steady night.