Dobsonian telescopes offer an incredible aperture-to-price ratio. The Dobsonian mount, popularized by John Dobson in the 1970.s, is a simple and efficient method of mounting a Newtonian reflector, based on the alt-azimuth principal. Fast and easy to set up, the Dobsonian mount consists of a box-type mounting which allows the telescope to pivot in altitude, while the box itself is rotated on a base in azimuth. The secret of the design is to correctly balance the optical tube and use frictional materials which allow it to be moved easily when nudged but to stay in position when not. The mount is designed to be driven by hand as opposed to slow motion controls. Sky-Watcher Dobsonians provide excellent all round performance for the observation the moon and planets and deep-sky objects such as galaxies and nebulae.
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Characteristics :
Aperture 254mm, focal lenght 1200mm, f/4.7
Central obstruction appr. 27%
2" focuser with reduction 1¼"
Resolving power: 0.59"
Retractable upper tube unit Parabolic mirror and secondary mirror coated with Radiant Aluminum Quartz (RAQ) coating, with up to 94% reflectivity and optimum durability and long-term stability
Total weight appr. 44kgs
Delivery :
10" Dobsonian telescope
w/ Flex-Tube system
2" focuser with reduction 1¼"
9x50 finder with dovetail connector
25mm & 10mm 1¼" Super eyepieces
Products specifications
Type of telescope
Newtonian (Dobsonian)
Focal length
1200 mm
Type of mount
Dobsonian mount
Max. useful visual power
500 x
Eyepieces
Super Plössl 10 mm and 25 mm
Connection to eyepiece
1 1/4" , 2"
Aperture
254 mm
Designation
Alt-Azimuth Mount
Viewfinder
9 x 50
Secondary mirror support
0.5 mm ultra thin mirror supports
Focuser
Dual-Fit 1.25"/2" Crayford focuser
Power Supply
12V
Focal ratio
f/4.7
Hight / Diameter of Rockerbox
1m (collapsed) / 60 cm
Resolution
0.59"
Total Weight
44 kg
Weight of Rockerbox
25 kg