Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
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.
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.
Key differences
| Astrophotography Exposure Calculator | Exoplanet Habitable Zone Calculator | |
|---|---|---|
| Category | Astronomy | Astronomy |
| Inputs required | 4 | 3 |
| Result | Optimal Exposure Time (seconds) | Optimal Habitable Distance (AU) |
| What it does | 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. | 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. |