1100GTO German Equatorial Mount - with ETR Absolute Encoders
Astro-Physics
From $17,025.00
2 stores
The Astro-Physics 1100GTO is a mid-sized, high-payload German equatorial mount featuring extended temperature range (ETR) absolute encoders on both RA and Dec axes for error-free tracking and robotic imaging capabilities. This precision-engineered mount combines portability with exceptional stability, separating into two lightweight components for easy field transport while maintaining a robust 110 lb (50 kg) instrument capacity. Operated by the GTOCP4servo drive system with advanced periodic error correction, it delivers tracking accuracy well under 0.5 arcseconds and offers flexible control options including WiFi, Ethernet, USB, and serial connectivity for both observatory and portable field use.
Specifications
| Payload Capacity (metric) | 50 kg |
| Heaviest Single Component (Metric) | 12.5 kg |
| Servo Step Accuracy | 0.05″ |
| Maximum Slew Rate | 5° |
| Portable Operation | 12V Battery Compatible |
| Control Connectivity | WiFi, Ethernet, USB, Serial Ports |
| Power Supply Voltage | 12 V |
| Pointing Accuracy | 1′ |
| Modular Design | ✓ |
| Mount Weight (Metric) | 24 kg |
| Can Separate Into Components | ✓ |
| Latitude Range | 0° |
| Payload Capacity | 110 lb |
| Sidereal Rate Slewing | 1200 |
| Mount type | German Equatorial |
| Encoder Temperature Range | -40 °F |
| Azimuth Adjustment Range | 9° |
| DEC Shaft Diameter | 3.15 mm |
| Periodic Error With PE Correction | 0.2″ |
| Encoder Function | Error-free tracking and software readable absolute position |
| Declination Gear Diameter (Metric) | 183 mm |
| Slewing Power Draw | 2.5 A |
| Sidereal Rate Manual Guiding | 0.25 |
| Periodic Error (Peak-to-Peak) | 3.5″ |
| Drive System | GTOCP4 Servo Control |
| Mount Weight | 52.9 lb |
| Declination Gear Diameter | 7.2 in |
| Speed Range | 4800 |
| Periodic Error Specification | 7″ |
| Tracking Power Draw | 0.5 A |
| Encoder Type | Extended Temperature Range (ETR) Absolute Encoders |
| Observatory Operation | Regulated Power Supply Required |
| Heaviest Single Component | 27 lb |
| RA Shaft Diameter | 3.15 in |
| Motor Type | Swiss DC Servo Motor |
| Through-Mount Cabling | ✓ |
| Included Software | APCC-PRO, PEMPro v3, PulseGuide |
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