I'm attempting to create a day-into-night timelapse scene, and I'm running into an issue trying to get a smooth transition between the Corona sky and a second sky with a starfield light shader.
I currently have the following set of relevant objects:
Sky_Day: A typical sky object with the Corona sky tag on it
Sky_Night_Stars: A sky object with an emissive starfield shader, with a Corona compositing tag that prevents the stars from affecting the GI or cast shadows
The main issue is that I can't find a way to fade out the visibility of the Sky_Day object. A C4d visibility tag doesn't seem to affect it in any way, and while the Corona compositing tag has a "seen by camera" checkbox, that's a very harsh on/off function. Ideally I need to fade it out over a few seconds to cover the sunset period. Turning down intensity and turbidity seems to reduce the sky to a near-invisible level, but it doesn't allow the stars to shine through as I'd hoped.
Any suggestions would be greatly appreciated.