The movement of the telescope is completely manual, providing a fluid, exploration-style experience.ĭobsonian telescopes with tracking capabilities are available, but the price and complexity of the design increase with this feature. The “light bucket” design is optimized for low magnification observing, without the aid of equatorial tracking. I currently own and enjoy an Apertura AD8 Dobsonian (best value) telescope, and the Celestron StarSense Explorer Dob(includes smartphone app) for visual observing of the night sky in my backyard. The added aperture helps to reveal a brighter and more detailed image of your subject than you would see with a smaller telescope. Generally, the larger the aperture, the more light the telescope can collect. They use mirrors instead of glass (like a refractor telescope does). A well-balanced optical tube inside of the rocker box is essential for an enjoyable experience.ĭobsonians are often referred to as “light buckets” because they offer the widest aperture for the price.
When your celestial subject is in the field of view of the eyepiece, you can tighten the control knobs to stiffen the movements of the telescope. Then, you can point the telescope up or down (altitude) by manually moving the optical tube within the rocker box. The altazimuth base of a Dobsonian requires you to manually point the telescope in the direction of your subject by pushing the azimuth turntable. You do not need a huge Dobsonian telescope for incredible views of space, an 8″ model is more than enough to see most of the best objects in the night sky. In fact, in the summer of 2023, I brought the biggest telescope I’ve ever used to a star party, and it was a 14″ collapsable Dobsonian telescope (Sky-Watcher FlexTube 350P). This telescope type is a popular choice at star parties and visual observations from a dark sky site.
Thanks to a large objective diameter, the Dobsonian design is perfect for observing faint, deep-sky objects such as nebulae and galaxies.
Using a GoTo Dobsonian Telescope in my backyard. The secondary mirror directs the light to the focuser and your telescope eyepiece. The telescope works by reflecting the light that enters the optical tube assembly from a curved primary mirror to a flat secondary mirror. The simple altazimuth-mounted Newtonian reflector design is perfect for amateur astronomers as it offers impressive light-gathering power at an affordable price. It offers the largest aperture for the price, delivering impressive visual views through the eyepiece.Ī Dobsonian (or “Dob”) is a type of telescope that was popularized by John Dobson in 1965. A Dobsonian telescope is widely agreed to be the best possible “ first telescope” for a beginner.
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