I notice that people often post old Apollo era shots of Earth, unprocessed, in some cases reproduced from faded prints.
Well, haze in the atmosphere dulls down all shots from space, but it’s REALLY easy to fix. I’ll be using Photoshop elements, but you can do the same with pretty much any image editor, including the free open source GIMP. Similar options are available on tablets and phones.
The same techniques are a good start in restoring scans of old family photos.
This is a fairly old tutorial, as you may notice by the version of Lightwave used! However, the principles are exactly the same in newer versions, and indeed you should be able to apply the ideas presented with pretty much any CGI software.
I have seen many rather poor attempts to make convincing ringed planets, and thought it might be a good idea to tell you how I do it. I rate it as intermediate in level, as I am not going to explain mouse click and numeric values. You should be familiar with making spheres and disks, and applying image based texture maps. I have done this tutorial as one long page, so it is easier for you to print. It should work with any version of Lightwave from 5.6 onward, and the ideas should also be easy to adapt to any other modern 3D graphics package.
There’s no doubt that it is possible to spend vast amounts on graphics software – many of the industry standard packages run to thousands of pounds, and even image editors like the full Photoshop are very expensive, (and come with monthly fees too).
But provided you already have a computer, it is possible to get going for little or even nothing. This blog post will explore some of your options.
Be aware though, that this stuff is NOT easy, and whatever package you go for, it will take considerable time and effort to master.
This is a seriously powerful 3d package, with some highly advanced features such as fluid simulation, and hair systems. It is completely free, and open source.
I gather from Twitter that some people find it interesting to follow my approach and progress when building a new model. So here’s a blog post where I will show how a project comes together, with lots of illustrations.
My starting point is to gather references, particularly high resolution photos, and plans with dimensions. Fortunately this one is covered in the excellent “Rockets of the World” by Peter Alway. It’s not highly detailed, but I find if you can get the overall dimensions of major features correct, then it’s not too tricky to fill in the rest from good photographs.
One of the frustrations of working with CGI is that you sometimes find a brilliant free model, but it’s not for your software. And a specific example that has frustrated me is that there are some great models available in Blender format on the NASA 3d object library site:
I wanted to make a dwarf planet, using elevation maps from the Moon, (and maybe Mars?) for realistic craters. I thought it may be helpful to save out the steps, so that others can follow along. Tutorial time!
You will need:
The 3D program of your choice, it should support displacement maps.
A high res source elevation map, these are available online.
An image editor that can edit 16 bit grey scale images.
I started with a slice of elevation map from the rear of the moon, (less recognisable), in the proportions of 2:1