3" Tabletop Dobsonian Features
- Table Top Dobsonian
- Diffraction Limited Parabolic mirror
- Lightweight and Extremely Portable (40cm long, total weight less than 2kg)
- Dobson Wood Mount
- No Disassembling or Collimation is required between use
- Gift Box
- Backed by 5 Years Sky-Watcher Limited Warranty
5 year manufacturer warranty (not transferable).
3" Tabletop Dobsonian Description
Sky-Watcher Heritage 3" Table Top Dobsonian Telescope
Designed as a great choice for beginners and children, this Sky-Watcher Heritage 76mm Dobsonian is very simple and easy to use and makes an ideal gift for the young astronomer. Coming with a 5x24 magnification finderscope and two 1.25" eyepieces, this telescope has everything you need to start out. The optical tube and mount come fully assembled, ready to use straight out of the box - just use the finderscope to point at your target, insert the eyepiece and enjoy the night sky!
The optical tube design is synonymous with Galileo and his conflict with the Catholic church. Galileo Galilei believed that the Earth revolves around the Sun, but his theory clashed with the geocentric theory held by the establishment of the time. His belief led him to be denounced to the Roman Inquisition; he was accused of heresy and forced to withdraw his theories.
The telescope tube is also adorned with the words “Galileo 400” in recognition that in 2008 his first telescope turned 400 years old.
Accessories in the Box:
- Finderscope 5x24
- Eyepiece Super 25mm (12x)
- Eyepiece Super 10mm (30x)
Optical Design
Reflector Newtonian
The optical design of a telescope is a feature that defines what sort of observing the telescope is suitable for.
Optical Diameter
76mm (3")
The aperture (diameter) of a telescope’s main lens or mirror. This describes how much light a telescope can grasp.
Focal Length
300mm
The distance that the light has to travel between the aperture and the focal point. A smaller focal lengths will deliver a wider field of view.
F/Ratio
f/4
The relationship between the focal length and the aperture, larger f/numbers imply higher magnification.
Highest Practical Power
152x
Exceeding the Highest Practical Power will result in a fuzzy image.
Diameter
Rack and Pinion 1.25"
Stellar Limit Magnitude
12.5
The magnitude of the faintest object visible under zero light pollution conditions.
Resolving Power
1.58"
The ability to clearly distinguish between two points whose separation is less than the smallest angle that your eye can resolve.
Light Gathering Power
118
How much brighter things will appear than what the human eye can see.
Finder Scope
5x24
A low powered mini telescope with a wide field of view to assists with locating objects before observe through the main telescope.