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Eclipses rendering and precision

Posted: 07.03.2002, 07:21
by flym
I was looking at the august 11th, 1999 european solar eclipse from the Earth surface. Looking up at the sky I noticed that the sun's disk is greater then the moon's one, while the moon in reality hided completely the sun. Probabily there are some problems with the diameter of sun or moon, because the time and location of both, moon and sun, seems correct because the eclipse does appen.

About the rendering I'd like to point out that the atmosphere is not obscured by the moon shadow. Ok, Celestia is not based on a ray tracing engine, but it is not really possible to project the shadow texture also on the atmosphere?

Posted: 08.03.2002, 05:39
by Guest
but it is not really possible to project the shadow texture also on the atmosphere?


That would be cool

looks at this screenshot, with atmosphere

http://www6.gratisweb.com/demo-n/euroeclipse.jpg

and this other one without atmosphere

http://www6.gratisweb.com/demo-n/euroeclipse2.jpg

The atmosphere of the sun causes the problem that the sun is bigger than the moon

Posted: 08.03.2002, 09:40
by Laahel
hello

hey, how do you do to have a big moon like in your shots ????

when i look the eclipse from the earth, the moon ( and sun ) are extra tiny !!! ( like 5 milimeters or less on my 17" )

thanks in advance

bye

Posted: 08.03.2002, 15:38
by chris
Use the , and . keys to decrease and increase the field of view. By default, the field of view is 45 degrees vertically. When viewed from the Earth, the Sun and Moon are 0.5 degrees in diameter, so they are only 1/90th of the size of the window.

--Chris