I am an astrophysicist at the Institute for Advanced Study in Princeton. As an outreach project I developed an iPhone/iPad app, called 'Exoplanet'. It has been very popular recently with several million downloads. I recently received a grant from the Royal Astronomical Society in London to further improve the app.
I need better looking three dimensional models of extrasolar planets.
These images should be a pre-rendered family with two parameters: planet mass and temperature. I need at least 64 (8x8) different images. Each image should show one planet (possibly including an atmosphere layer). The planet needs to be centered in a square image. Nothing else (no background, planetary rings, lens flares, etc).
The attached image shows you the current set of illustrations. A reddish Jupiter corresponds to a "Hot Jupiter", etc.
The images do not need to represent the solar system planets exactly when the two parameters are similar. But the user should be able to guess the approximate size and temperature based on the image alone.
Use google to search for exoplanet images. This gives you a good idea of what I have in mind. The images should be crisp and have a professional touch.
The background must be transparent. Each image should have a resolution of at least 512x512 pixels.
The money for this project has been provided by the Royal Astronomical Society in London. In case you're producing an exceptionally good work, I'm sure we'll find a way to compensate you beyond what is offered on this website.