Am 18.12.2013 01:27, schrieb David Given:
> I'm experimenting with clouds. The attached image demonstrates. (The
> view under the clouds is looking north along the western shore of the
> Sea of Smyth, on the eastern edge of the moon --- the big crater is
> probably Napier. The camera is 200km up.)
>
> The clouds are implemented as a textured sphere 35km above the surface.
> The cirrus texture on the sphere is adequate, but I can fix that. The
> thing I'm worried about is the dark edge on the horizon.
>
> I know what this is: my sphere is defined as:

No, I'm pretty sure that isn't the reason; this must be something different.

I think what's really happening is that your sphere cuts away the media. 
I'm not sure how media is handled in such cases, but my guess is that 
the inner sphere "overrides" the media, and that the "hollow" keyword 
only serves to make the sphere available as another media container.

Try explicitly adding the atmosphere media to the cloud sphere.

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