[Shiraz (Ray)]

actually the colours are there Renato. Its just that our eyes are not sensitive enough to see them and even what you see in the scope is a very poor subset of the real colours (whatever that means). DSLRs, CCDs etc just give us extended senses and allow us to see more of what is there - they don't make stuff up. For example, nebulae have predominantly pure saturated red emission from Hydrogen and/or pure saturated blue/green from Oxygen. Galaxies may have brown dust, areas of old stars that are yellow/orange, pockets of new hot stars that are bright blue and a smattering of saturated red hydrogen and teal oxygen nebulae - and maybe some sky blue reflection nebulae. Our eyes see most of this as shades of grey, but that definitely does not reflect what is there - you need a camera to see that. Even just pointing a DSLR at the milky way for a modest exposure should convince you that that there is a lot more colour out there than we can see.

In any event, digital imaging in colour can produce some startling images that we can relate to and enjoy - that has to be good.