Sky-Watcher Stargate 450P SynScan Truss-Tube GoTo Dobsonian Telescope
Sky-Watcher SKU: S11930 | Helix SKU: CTS11930
Stargate's feature Sky-Watcher’s exclusive fused conical parabolic mirrors. The fused design allows for thinner mirror construction that provides faster cooling and lighter weight.
Combined with the cast cellular secondary mirror and Sky-Watcher’s exclusive 94% reflectivity coatings, Stargate delivers bright, detailed views of your favorite deep sky objects. The 18 inch model captures 27% more light than our 16 inch, while the 20 inch (a full half meter of aperture) boasts a monster 56% more light gathering power.
Solid foundations, easy assembly
The minimalist all-metal structure of the Stargate produces a sturdy and stable platform while maintaining a convenient and compact footprint. The truss-tubes break down to a very manageable 36 inch length for easy transport. Azimuth and altitude bearings are steel and Teflon for smooth, steady movement.
Setting up a Stargate is a simple procedure, taking only about 20 minutes. Spring loaded truss anchor points are clearly labeled to eliminate any frustration or confusion. Adjustable feet make leveling a snap.
Synscan puts the universe in your hands
Our GoTo line of Stargates provide motorized operation in both alt and azimuth axes. Featuring Sky-Watcher’s proprietary SynScan hand controller, your scope now automatically slews to and tracks over 42,900 celestial objects from the on-board database.
Sky-Watcher’s Freedom Find™ dual-encoder technology ensures accurate tracking while allowing you to move the telescope manually in either axis without compromising alignment. This provides a level of convenience and flexibility not available in telescopes without dual encoders.
- Fused conical primary mirror
- Cellular secondary mirror
- Dual speed 2” Crayford focuser
- Two section truss poles (compact transport)
- Minimalist, all metal construction
- Fast f/3.95 optics for short eyepiece heights
- 20” provides 56% more light than a 16” telescope
- 94% reflectivity coatings
- Freedom Find, dual encoders
- SynScan with 42,000+ object database
Specifications:
| SKU | S11930 |
| Optical Info | |
|---|---|
| Optical Design | Newtonian |
| Mirror Coatings | 94% Aluminum |
| Glass Type | Borosilicate |
| Primary Aperture (mm) | 508 |
| F/Ratio | 3.93 |
| Focal Length (mm) | 2000 |
| Secondary Diameter | 134mm |
| Secondary Obstruction (by diameter) | 26% |
| Secondary Obstruction by Area | 7% |
| Observational Info | |
| Dawes Limit | 0.23 |
| Rayleigh Limit | 0.28 |
| Limiting Mag. | 16 |
| Minimum Magnification | 72 |
| Maximum Magnification | 1000 |
| Light Gathering (compared to next size down) | 23% |
| General Info | |
| GoTo | Yes |
| Object Database | 42,900+ |
| Dual Encoders | Yes |
| Focuser | 2" Dual Speed Crayford |
| Zenith Eyepiece Height | 79" |
| Dob Base Weight | 66 lbs |
| Upper Cage Weight | 12 lbs |
| Truss Pole Weight | 2.6 lbs each. 16 lbs total |
| Mirror Box Weight | 70 lbs |
| Full Assembled Weight (with weights) | 164 lbs |
| Accessories | |
| Included Finder | 9x50 Finder |
| Included Diagonal | No |
| Included Eyepieces | 28 LET/10mm/Coll. |
| Magnification w/ Included Eyepieces | 71x/200x |
| Included Case | No |
| Corrector | No |
| Other Included Accessories | 2.3lbs counter weights (3), Shroud, Truss clamps |
