How to map an equirectangular image onto an icosphere in Blender 2.79b I'm new to Blender 2.79. I'm trying to map an equirectangular image of the night sky (pictured below) onto an icosphere.



The problem is, every time I manage to create a material and/or texture for the icosphere, it wraps only part of the way around the object. Pictured below is as far as I can get, with a color-inverted version of the texture so you can see better what's going on.



Any help would be very much appreciated!

Thanks :)
I don't know how you could correctly unwrap an icosphere but you could do it another way around with an UV sphere, an icosphere, and a Shrinkwrap modifier:


Create an UV sphere.
Select all except the two poles and Unwrap > Sphere Projection mode, with Align to Object option.
Select the 2 poles and make a simple unwrap.
Prepare your material.
It works, your drawing is projected on your UV sphere.
In Object mode, create an icosphere within your UV sphere.
Give your UV sphere a Shrinkwrap modifier and choose the icosphere as Target.
Give your UV sphere one or probably 2 Subsurf modifiers, one above, one below the Shrinkwrap modifier. Test the best solution, and the best Subdivision values, it looks like an amount of 3 is necessary on the top Subsurf.
Now, thanks to the Shrinkwrap, your UV sphere has taken the shape of the icosphere, you should have the result you want.