What is a Dobsonian reflector telescope?
What is a Dobsonian reflector telescope?
Dobsonian telescopes are a type of reflecting telescope that is very popular in the visual astronomy community. They work by reflecting the light travelling inside their optical tube assembly (OTA) from a curved primary mirror to a flat secondary mirror which then directs the light to the focuser.
How big is a 8 inch Dobsonian telescope?
Specifications for the 8″ Collapsible Dob
| Telescope Type: | Dobsonian mounted Reflector |
|---|---|
| Focal Ratio: | f/6 |
| Finderscope: | 8 x 50 |
| Mount: | Dobsonian Cradle |
| Optical Tube Length: | 113c.m (44.5 inches) |
What are the advantages of a Dobsonian telescope?
Dobsonian telescopes are designed to be simple, easy to use and gather as much light as possible. Because of this robust simplicity, they are very economical and popular with astronomers of all levels of ability.
Is an 8-inch Dobsonian good?
Yes. The 8inch is a kind of best choice. A dobson is suitable for: Visual observation of galaxies, nebulas, star clusters, planets, double stars, but DO NOT expect to see images in the eyepiece as you see on the internet.
Can you see galaxies with 8 Dobsonian?
Your best views will be of planets and some double stars. You might see some brighter galaxies with your 8” dob, but with no details. It is not a great location for looking at deep sky stuff. Bortle 3 and better is what you might strive for to get some quality observations.
What does 6-inch aperture mean in a DOB Smithsonian telescope?
And, a 6-inch aperture in a Dobsonian means you should get useful views of the moon and planets. A focal length of 1200mm and aperture of 6″ are good for planet viewing. Look for one with a focuser made of metal rather than plastic. Orion SkyQuest XT6 Classic Dobsonian Teles… Are you looking for your first Dobsonian?
Why Guan Sheng optics classic 8-inch Dobsonian telescope?
This Classic 8-inch dobsonian from Guan Sheng Optics offers high optical performance at a low price. The optical and mechanical quality are without any compromises. This classic Dobsonian telescope is one of our best-sellers. 8″ Aperture are perfect for Moon and Planets but also for Nebular objects and Galaxies.
What is the purpose of the Dobson telescope?
Dobson’s design allows a builder with minimal skills to make a very large telescope out of common items. Dobson optimized the design for observation of faint objects such as star clusters, nebulae, and galaxies (what amateur astronomers call deep sky object s).
Who invented the DOB Smithsonian telescope?
It is hard to classify the Dobsonian Telescope as a single invention. In the field of amateur telescope making most, if not all, of its design features had been used before. John Dobson, credited as having invented this design in 1965 pointed out that “for hundreds of years, wars were fought using cannon on ‘Dobsonian’ mounts”.
