Challenger wrote:What equipment do you use to view nebulae? Or are they a selection of photos from the Internet? I just think you need super-powerful equipment for such research. And for such equipment, you first need to be outside the city, so that the light from the lanterns does not interfere. And it seems to me that something like a separate observatory is needed to house a huge telescope. It seems to me that all this should be worth not a din million dollars.