Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Optics
Telescope Resolution Calculator
Determine the angular resolution, light-gathering power, or limiting magnitude of a telescope based on aperture and wavelength. Perfect for amateur astronomers comparing instruments or planning observations.
Fill in the required fields to see your result.
Optics
Telescope Magnification Calculator
Calculate the magnification, resolution, and light-gathering power of any telescope from its objective focal length, eyepiece, and aperture. Ideal for astronomers choosing eyepieces for a target.
Fill in the required fields to see your result.
Key differences
| Telescope Resolution Calculator | Telescope Magnification Calculator | |
|---|---|---|
| Category | Optics | Optics |
| Inputs required | 4 | 2 |
| Result | Result | Magnification (×) |
| What it does | Determine the angular resolution, light-gathering power, or limiting magnitude of a telescope based on aperture and wavelength. Perfect for amateur astronomers comparing instruments or planning observations. | Calculate the magnification, resolution, and light-gathering power of any telescope from its objective focal length, eyepiece, and aperture. Ideal for astronomers choosing eyepieces for a target. |