| 11. | Mathematically this is defined using limits as the area and solid angle tend to 0.
|
| 12. | A small object nearby may subtend the same solid angle as a larger object farther away.
|
| 13. | The peak area-solid angle product response function of each telescope ranges from 0.04 to 0.015 cm2-sr.
|
| 14. | The ARGUS detector was a hermetic detector with 90 % coverage of the full solid angle.
|
| 15. | But what solid angle are we talking about?
|
| 16. | :There is more than just the 360?too, it is actually 4 pi steradians of solid angle.
|
| 17. | Mathematica : Planck intensity ( energy / sec / area / solid angle / wavelength ) is:
|
| 18. | :: : : Conveniently that portion is 0, since " straight forward " is zero solid angle.
|
| 19. | Note that the angle and solid angle are included in this list but are actually dimensionless quantities.
|
| 20. | Taking an angle of 20 milliradians gives a solid angle of W = 1.3 * 10-3 steradian.
|
