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Telescope Dobson 458/1900 StarGate 18" SkyWatcher SynScan GOTO

Telescope Dobson 458/1900 StarGate 18" SkyWatcher SynScan GOTO
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Recíbelo en 8/10 días Laborales


Sky-Watcher StarGate Dobsonians with their huge light gathering capabilities provide the ultimate WOW factor experience for aficionados of visual astronomy, delivering outstanding performance on both Planetary and Deep-Sky objects. Now it comes with Sky-Watcher's signature SynScan Goto function which will make your observation experience more magical. The elegant and rigid all-metal truss tube design is easily transportable when unassembled, and can be assembled and ready for use in about 20 minutes. The mount provides motorised operation in both Alt and Azimuth axes, and can slew the telescope automatically, and track over 42,900-night sky objects from the Synscan handset's extensive computerised database. Features Freedom-Find™ Dual-Encoder technology, which also allows the telescope to be moved manually in either axis without losing its alignment or positional information, giving the user enormous convenience and flexibility during observing sessions. Simply push the telescope close to the object and let the computer do the rest of the work!


Features High-Quality Parabolic Primary Mirrors to eliminate spherical aberrations inherent in 'fast' focal length reflectors with spherical primary mirrors. The mirrors are parabolized to bring all the light rays to the same focal point to give sharp, contrasty images, which are full of detail.


Most reflectors today usually have a coat of aluminum as the mirror surface and then an overcoat of silicon monoxide or silicon dioxide to protect it. Silicon dioxide produces a much more durable coat than silicon monoxide but requires specialized equipment to apply it and is, therefore, more expensive. Protection is needed, because, in most reflectors, the mirror is open to the elements and deterioration of the reflective layer reduces the resolution of the telescope. ALL Sky-Watcher reflectors are Multi-Coated with Silicon Dioxide as a standard for Optimum Durability and Long Term Performance.


Magnifications (with Eyepieces supplied): x68 & x190

Highest Practical Power (Potential): x916

Diameter of Primary Mirror: 458mm

Telescope Focal Length: 1900mm (f/4.1)

Eyepieces Supplied: 10mm (1.25") & 28mm (2”)

Collimating Eyepiece (1.25")

Focuser  Dual-Speed 2" Crayford with 1.25” adaptor

Primary Mirror Parabolic (Patented weight saving design)

Secondary Mirror  120mm

Finderscope  9x50

Direct SLR Camera Connection

Fabric Light Shroud

Alt-Azimuth Go-To mount (Metal construction)

Transmission: Worm + Timing Belt + 64 Micro-step/0.9º Stepper Motor Drive

Patented 'Freedom-Find' Dual-Encoder design allows manual movement without losing positional information

Pointing Accuracy: Up to 5 arc-minutes (RMS)

Gear Ratio: Azimuth 400, Altitude 1523.796

Synscan Computerised Handset with 42,900+ Object Database

Power requirement: DC11V/5A ~ 15V/3A

31% more Light Gathering than 400mm

Max Height: 2100mm, Base Diameter: 590mm, Max Horizontal Radius: 1900mm

Overall Weight 80kg

Product Name Stargate-450P SynScan Mount

Mount Type Alt-azimuth

Weight Approx. 80kg/Approx. 90kg

Primary Mirror 18 Inch (458mm) Parabolic

Focal Length 1900mm

Focal Ratio f/4.1 / f/4 

Power Requirement DC11/5A ~ 15V/3A

Motor 0.9 º Hybrid Stepper Motor

Transmission Worm + Timing Belt + 64 Micro-step/0.9º Stepper Motor Drive

Gear Ratio Azimuth: 400

Altitude: 1523.796

Resolution Azimuth: 10240000 CPR

Altitude: 39009185.2 CPR

Tracking Rate Sidereal rate, solar rate, lunar rate

Tracking Mode Alt-azimuth mode

Hand Controller SynScan

Database 42000+ Objects

Celestial Object Catalog Messier, NGC, IC, SAO, Caldwell, Double Star, Variable Star, Named Star, Planets

Pointing Accuracy Up to 5 arc-minutes (RMS)

Resolution of Aux. R.A./Dec. Axis Encoders

Azimuth: 19136 CPR

Altitude: 212622.2 CPR

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