Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Astronomy
Exoplanet Habitable Zone Calculator
Estimate the inner and outer boundaries of a star's habitable zone based on its luminosity, spectral type, and a planet's mass. Use it when assessing whether a known exoplanet could support liquid water on its surface.
Fill in the required fields to see your result.
Astronomy
Astrophotography Exposure Calculator
Calculate the recommended sub-frame exposure time for deep-sky astrophotography based on your telescope, camera, and sky conditions. Ideal for planning imaging sessions targeting galaxies, nebulae, or star clusters.
Fill in the required fields to see your result.
Key differences
| Exoplanet Habitable Zone Calculator | Astrophotography Exposure Calculator | |
|---|---|---|
| Category | Astronomy | Astronomy |
| Inputs required | 3 | 4 |
| Result | Optimal Habitable Distance (AU) | Optimal Exposure Time (seconds) |
| What it does | Estimate the inner and outer boundaries of a star's habitable zone based on its luminosity, spectral type, and a planet's mass. Use it when assessing whether a known exoplanet could support liquid water on its surface. | Calculate the recommended sub-frame exposure time for deep-sky astrophotography based on your telescope, camera, and sky conditions. Ideal for planning imaging sessions targeting galaxies, nebulae, or star clusters. |