A large telescope Newton system suspended on a mount Dobson with a diameter of 25cm. It is a typical light-weight Newtonian telescope ideal for observing nebular objects under dark skies. At the same time, it is a telescope which, with a very large aperture, will enable detailed observations of the planets of the solar system and the Moon..Pyrex mirror
. All telescopes Sky-Watcher Dobson have as standard a mirror made of PYREX-, a glass with low thermal expansion, so that the image quality given by a telescope with such a mirror is higher than that of telescopes with a mirror made of ordinary glass.Foldable design
. Folding is done thanks to the sliding elements of the tube, no tools are required here, nor is it necessary to disassemble the tube into separate pieces. The telescope is ready for observation within seconds. The precision-made mechanism means no need for collimation each time after unfolding.Optical system
. The telescope was made in the classic Newton system. The parabolic main mirror has a diameter 250mm and a focal length of 1250mm. It is a mirror with a high light intensity of f/5..
Mounting
. The telescope is suspended on a azimuthal Dobson mount. The Dobson mount is a simple and very stable design that allows the telescope to be easily rotated in azimuth and elevation. The telescope is mounted on two sides in a forked mount, while the entire top of the mount rotates at the base. The very low center of gravity and the construction with quite rigid materials makes the telescope suspended in a much more stable way than in the case of parallactic mounts..
Extractor
. The telescope is equipped with a 2' eyepiece extractor with a reduction to 1.25'. It is a Crayford focuser, operating smoothly and without backlash. It comes with an extension for 2', extension/reduction for 1.25'. The extensions should be used interchangeably without combining them into one set. The focuser is compatible with autofocuser drives manufactured by Sky-Watcher.Technical specifications:
. Optical system: Newtonian (reflector)
. Main mirror diameter: 254 mm
Focal length: 1250 mm
Focal length: f/4.7
Secondary mirror diameter: 58 mm
Highest useful magnification: 508x
Range: 14.7 mag
Resolution: 0.45'
Mount: Dobsonian, azimuthal
2' Crayford focuser with reduction to 1.25'
Weight of optical tube: 15 kg
Mount weight: 12.5 kg
Optical tube length and width: 80 - 112 cm / 28 cm
Diameter and height of the base: 52 / 74 cm
Manufacturer: Sky Watcher (Synta), Taiwan.
