We get asked often - What are Dobsonian Telescopes? Well, Dobsonian Telescopes are actually reflector telescopes that come with a large tube that sit on a stable base, a clever invention by John Dobson. Dobsonians make great value observing machines because of their large aperture and ease to manufacture. You tend to get a high focal length, large diameter tube at a great price, without compromise on image quality. Dobsonians are trusted and used even by professional astronomers. However they so simple to set up and use - they make ideal scopes for new astronomers too. Dobsonians, with large apertures are great for viewing deep-sky objects.