He originally made simple homemade scopes from household materials and ground mirrors out of the glass of old ship portholes. The name of the Dobsonian telescope comes from its creator John Dobson, who combined the simple design of the Newtonian telescope with the Alt-Azimuth mount. My own and most favourite telescope is my Skywatcher 10-inch Dobsonian and I will probably be using it for many more years to come, as it is difficult to beat! Because of this robust simplicity, they are very economical and popular with astronomers of all levels of ability. Skywatcher 10 inch Dobsonian Credit ĭobsonian telescopes are designed to be simple, easy to use and gather as much light as possible. You may have some success with webcam imaging with some of the GoTo Mounts though. For that you will need an equatorial mount, which will track the stars equatorially. Some people make their own homemade Dobsonian scopes too!ĭue to the nature of the Alt-Az mount, Dobsonians are not suitable for long exposure astro imaging. A Dobsonian is a great all-around telescope, and are available in almost all telescope stores. Resist the urge to spend lots of money on small computerized scopes that will eventually never get used, as they can be too complicated or you may not see much through them apart from the brightest objects such as the Moon.
#Dobsonian telescope manual
Personally I think it’s a bit over kill for a Dobsonian, as finding objects manually by star hopping or other manual methods helps you learn the sky better and can be fun. More so lately, some manufacturers have put GoTo systems with motors on some Dobsonian mounts. The mount is usually made from wood or metal with bearings and support for the two axis of movement. As with the optical part the mount is just as simple, if not more so! A basic manual mount which supports the optical tube and can be manually moved by hand in the Altitude (up/down) and Azimuth (left/right) axis.
The second part of a Dobsonian telescope is the mount. They can be many times larger and less expensive to produce than scopes with lenses. Dobsonian sizes range from starter scopes of 6 inches up to 30 inches, but common sizes are 8 to 16 inches in diameter.
#Dobsonian telescope plus
Plus they can be a lot bigger!īoth Dobsonian and Newtonian telescopes are measured by the size of the diameter of their primary (big) mirror.
A light bucket!ĭobsonian/Newtonian telescopes have a big advantage over telescopes with lenses such as refractors and Cassegrain telescopes, as mirrors are a lot cheaper to make than lenses. The more light gathered, equals more fainter objects to be seen. The benefit of this type of optical arrangement is the telescopes light gathering ability.
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