Convert Hemisphere to Square Arcsecond
Input the number of hemispheres you want to convert to square arcseconds.
How to Convert Hemispheres to Square Arcseconds
The hemisphere and square arcsecond are both units of solid angle. 1 hemisphere equals 267319536214 square arcseconds. This means to convert hemispheres to square arcseconds, you multiply by 267319536214.
Formula
Step-by-Step Example
Convert 5 hemisphere to square arcseconds:
We need to convert hemispheres to square arcseconds
Since 1 hemisphere = 267319536214 arcsec², multiply by 267319536214
5 × 267319536214 = 1.3365976811e12
5 hemisphere = 1.3365976811e12 arcsec²
Hemisphere to Square Arcsecond Conversion Table
Quick reference table for common hemisphere to square arcsecond conversions. Click any value for detailed calculation.
| Hemispheres (hemisphere) | Square Arcseconds (arcsec²) |
|---|---|
| 0.1 hemisphere | 26731953621 arcsec² |
| 0.5 hemisphere | 133659768107 arcsec² |
| 1 hemisphere | 267319536214 arcsec² |
| 2 hemisphere | 534639072429 arcsec² |
| 5 hemisphere | 1.3365976811e12 arcsec² |
| 10 hemisphere | 2.6731953621e12 arcsec² |
| 25 hemisphere | 6.6829884054e12 arcsec² |
| 50 hemisphere | 1.3365976811e13 arcsec² |
| 100 hemisphere | 2.6731953621e13 arcsec² |
About These Units
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.
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.
Frequently Asked Questions
How do I convert hemispheres to square arcseconds?
To convert hemispheres to square arcseconds, multiply the value by 267319536214. For example, 10 hemisphere = 2.6731953621e12 arcsec².
How many square arcseconds are in 1 hemisphere?
1 hemisphere equals 267319536214 square arcseconds.
What is the formula for hemispheres to square arcseconds?
The formula is: arcsec² = hemisphere × 267319536214.