Sun

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Related to Limb darkening: limb brightening

Sun

A unit of length in Japan equivalent to approximately 30 millimeters.
References in periodicals archive ?
The ratio of the intensity at an angle [theta] to intensity at the center of the star from limb darkening is expressed as follows [6]:
On Solar granulations, limb darkening, and sunspots: Brief insights in remembrance of Father Angelo Secchi.
As a result, it has been nearly impossible to synthesize a realistic and cohesive portrayal of sunspots, granulation, and limb darkening, even though a cursory review of the question suggests otherwise.
The Sun is also characterized by limb darkening. The solar spectrum becomes less bright when viewing the Sun from the center to the limb.
Blending is also an easy way to depict limb darkening. Note the time you finish the drawing, and you are done.
Ironically, Titan's low apparent surface brightness makes it easier to distinguish the limb darkening of its tiny disk.
The lack of contrast between Uranus's pallid disk and the dark sky background also accentuates the planet's limb darkening, making it difficult to confirm whether its image is even in focus.
The black drop is caused by blurring due to Earth's atmosphere and telescopic diffraction, combined with the Sun's strong limb darkening at its extreme edge.
Once I'm satisfied with the color adjustments, my final step is to reduce the limb darkening on the solar disk.
Besides dark sunspots, bright active regions known as faculae, limb darkening, and some subtle granulation seen during good observing conditions, not much else is visible with white-light filters.