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🔭 Sky-Watcher Stargate 500P GoTo Dobsonian Telescope

Sky-Watcher's largest Dobsonian telescope: a monumental 508mm (20") truss-tube instrument with computerized SynScan GoTo tracking. The Stargate 500P is built for observers who want the single greatest jump in visual light-gathering power available in a Dobsonian design, revealing galaxies, nebulae and clusters with a depth that smaller telescopes simply cannot match.

🔭 508mm Aperture 🎯 SynScan GoTo 🏗️ Truss-Tube Construction 🌌 Extreme Deep-Sky Performance ⭐ Flagship Dobsonian

⭐ Quick Overview

Best For

  • Advanced amateur astronomers
  • astronomy clubs
  • dark-sky observing sites
  • public outreach events

Observing Targets

  • Faint galaxies
  • planetary nebulae
  • globular clusters
  • subtle deep-sky detail invisible in smaller telescopes

Main Advantages

  • Massive 508mm aperture for extreme light-gathering power
  • computerized SynScan GoTo tracking
  • collapsible truss-tube design for transport
  • exceptional value per millimetre of aperture

The Ultimate Amateur Light Bucket

The Stargate 500P represents the practical ceiling of what a large amateur Dobsonian can achieve: a full 508mm parabolic mirror gathers an enormous amount of light compared with even a 254mm (10") telescope, opening up faint galaxies, planetary nebulae and subtle structure in bright nebulae that remain effectively invisible in smaller apertures.

The truss-tube construction allows the telescope to break down into a compact package for transport to dark-sky sites, while the SynScan GoTo system takes over the demanding task of locating faint targets across such a large field of view.

🌌 What Can You See With The Stargate 500P?

🌌 Faint Galaxies

Structure and detail in galaxies well beyond the reach of smaller telescopes.

✨ Planetary Nebulae

Fine structural detail in objects like the Ring and Dumbbell Nebulae.

⭐ Globular Clusters

Resolved to their cores with an extraordinary density of visible stars.

🪐 Planets

Exceptional resolution on nights of good atmospheric seeing.

💡 Why 508mm Aperture Is A Different League

A 508mm mirror gathers roughly four times as much light as a 254mm (10") telescope and more than 25 times as much as a 100mm refractor. At this scale, the difference is not incremental — entire classes of faint deep-sky objects become visible for the first time, transforming what visual deep-sky observing can reveal.

🎯 SynScan GoTo Technology At Scale

🎯 Automatic GoTo object locating across an extensive database
🔄 Motorized dual-axis tracking suited to high-magnification viewing
🏗️ Collapsible truss-tube design for transport to dark-sky locations
👥 A superb instrument for astronomy club and public outreach events

⭐ A Flagship Instrument For Serious Observers

The Stargate 500P is not intended as a casual first telescope; it is a flagship instrument for observers who have already built experience with smaller telescopes and want to experience deep-sky observing at its most capable, largely visual, level.

🎯 Perfect For

⭐ Advanced Amateur Astronomers

The largest practical step up in visual deep-sky performance.

🏛️ Astronomy Clubs

An outstanding shared instrument for dark-sky observing events.

👥 Public Outreach

Delivers unforgettable views for audiences of any experience level.

📸 Visual-First Design

The Stargate 500P is built primarily for visual observing. Its Dobsonian altazimuth mount is not intended for long-exposure deep-sky astrophotography, though its GoTo tracking is well suited to extended high-power visual sessions and basic planetary imaging.

💡 Deployment Tips For Best Results

  • Allow the large primary mirror significant cooldown time, often over an hour, to reach outdoor temperature.
  • A dark-sky site is strongly recommended to make full use of this aperture on faint targets.
  • Two or more people are typically needed to assemble and transport the truss-tube structure safely.

📊 Technical Specifications

Brand Sky-Watcher
Model Stargate 500P SynScan GoTo
Optical Design Newtonian Reflector
Aperture 508mm (20")
Focal Length 2000mm
Focal Ratio f/3.9
Mount Dobsonian, SynScan GoTo motorized
Tube Design Collapsible truss-tube

📦 Included Accessories

📦 Stargate 500P truss-tube optical assembly
📦 GoTo Dobsonian base & SynScan hand controller
📦 Eyepieces
📦 Finderscope
📦 Manual

❓ Frequently Asked Questions

❓ Is this telescope suitable for beginners?

It is best suited to observers with prior telescope experience, given its size and setup requirements.

❓ Can one person set it up?

Assembly and transport are generally easier with two people due to the telescope's size and weight.

❓ What kind of sky does this telescope need?

It performs best under dark skies, where its large aperture can reveal the faintest deep-sky objects.

⭐ Why Buy From MJKZZ?

✅ Genuine Sky-Watcher product
🚚 Fast European shipping
🔒 Secure payment options
💬 Expert customer support
📦 Carefully packed shipment
Within the EU, the goods usually arrive within a few working days. Deliveries outside of the EU can take from just over a week to two weeks. Even an exchange or return within 14 days can be handled more quickly, cheaper and less complicated on the MJKZZ.DE page, if the items only need to be sent back to Germany/Austria. For large orders OUTSIDE of EU contries, it is possible that the shipping costs need to be calculated manually becasue of insurance. But we only charge the real shipping costs!

If you are ordering OUTSIDE of EU: Please contact us to place your order without VAT. We will send you an invoice excluding 20% tax.

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