Convert Square Arcsecond to Hemisphere
Type the number of square arcseconds that you wish to convert to hemispheres.
How to Convert Square Arcseconds to Hemispheres
The square arcsecond and hemisphere are both units of solid angle. 1 hemisphere equals 267319536214 square arcseconds. This means to convert square arcseconds to hemispheres, you divide by 267319536214.
Formula
Step-by-Step Example
Convert 5 arcsec² to hemispheres:
We need to convert square arcseconds to hemispheres
Since 1 hemisphere = 267319536214 arcsec², divide by 267319536214
5 ÷ 267319536214 = 1.8704207223e-11
5 arcsec² = 1.8704207223e-11 hemisphere
Square Arcsecond to Hemisphere Conversion Table
Quick reference table for common square arcsecond to hemisphere conversions. Click any value for detailed calculation.
| Square Arcseconds (arcsec²) | Hemispheres (hemisphere) |
|---|---|
| 0.1 arcsec² | 3.7408414445e-13 hemisphere |
| 0.5 arcsec² | 1.8704207223e-12 hemisphere |
| 1 arcsec² | 3.7408414445e-12 hemisphere |
| 2 arcsec² | 7.481682889e-12 hemisphere |
| 5 arcsec² | 1.8704207223e-11 hemisphere |
| 10 arcsec² | 3.7408414445e-11 hemisphere |
| 25 arcsec² | 9.3521036113e-11 hemisphere |
| 50 arcsec² | 1.8704207223e-10 hemisphere |
| 100 arcsec² | 3.7408414445e-10 hemisphere |
About These Units
Square Arcsecond (arcsec²)
A square arcsecond equals (1/3600)² of a square degree or about 2.35×10⁻¹¹ steradians. One square arcminute = 3,600 square arcseconds. Measures individual star disks, exoplanet host star separation, and high-resolution imaging pixels.
Hemisphere (hemisphere)
A hemisphere equals 2π steradians (≈6.283 sr)—half of a complete sphere. Represents the visible sky from any point on Earth, or one side of a surface. Used in lighting calculations: a horizontal surface receives radiation from a hemisphere of solid angle.
Frequently Asked Questions
How do I convert square arcseconds to hemispheres?
To convert square arcseconds to hemispheres, divide the value by 267319536214. For example, 10 arcsec² = 3.7408414445e-11 hemisphere.
How many hemispheres are in 1 square arcsecond?
1 square arcsecond equals 3.7408414445e-12 hemispheres.
What is the formula for square arcseconds to hemispheres?
The formula is: hemisphere = arcsec² ÷ 267319536214.