| Optical Design | Schmidt-Cassegrain |
| Clear Aperture; Primary Mirror Diameter | 305mm (12″); 314mm (12.375″) |
| Focal Length; Focal Ratio | 3048mm; f/10 |
| Near Focus | (approx.) 75 ft. |
| Resolving Power | (arc secs.) 0.38 |
| Optical Coatings | MgF2 on correcting plate (2-sides); standard aluminum on primary & secondary mirrors |
| Ultra-High Transmission Coatings | optional at time of purchase |
| Limiting Visual Magnitude | (approx.) 15.0 |
| Image Scale | (degs./inch) 0.48 |
| Maximum Practical Visual Power | 750X |
| 35mm Angular Film Coverage / | 0.45° x 0.65° |
| Optical Tube Dimensions | (dia. x length) 13.6″ x 25″ |
| Secondary Mirror Obstruction | (dia.; %) 4.0″—11.1% |
| Telescope Mounting | heavy-duty fork type; double tine |
| Setting Circle Diameters | Dec.: 5″; RA: 8.75″ |
| RA and Dec. Motor Drive Systems | both axes: 185-speed, microprocessor controlled, 12v. DC servo motor; 5.75″ LX worm gear with Smart Drive software |
| Hemispheres of Operation | North and South, selected by GPS or user |
| Primary Mirror Lock | included (progressive tension) |
| Zero Image-Shift Microfocuser | included (4-speed) |
| GPS Alignment | included (16-channel GPS receiver, electronic sensors for true-level and North,with magnetic declination compensation) |
| GO TO Pointing Precision | 2-arc mins. (1-arc min. in HP-mode) |
| Slow-Motion Controls | manual and electric, RA and Dec. |
| Bearings | Dec.: 3 x 1.83″ dia. ball bearings; RA: 1 x 4″ dia. and 1 x 2.25″ dia. ball bearings |
| Autostar Hand Controller | Atmel 89C451 & PIC16C57 microcontrollers; 2 line x 16 alphanumeric character display; 20-button keypad, red LED backlit |
| Main Telescope Controller | distributed intelligence architecture using 8 networked microcontrollers (Motorola 68HC11, Atmel 89C451, 3 x PIC16C62, 2 x PIC16C54, Sony digital signal processor); 3.5-Megabyte flash memory, field reprogrammable, 32K RAM |
| Batteries; Battery Life | (approx.) 8 x C-cells (user-supplied); 20 hrs. |
| Onboard Celestial Object Database | 147,541 objects |
| Slew Speeds, RA and Dec. | 0.01x to 1.0x sidereal, variable in 0.01x increments; 2x, 8x, 16x, 64x, 128x sidereal; 1°/sec. to 8°/sec., variable in 0.1° increments |
| Tracking Rates | sidereal, lunar, or custom-selected from 2000 incremental rates |
| Materials: Tube Body; Mount Castings | aluminum; aluminum |
| Primary & Secondary Mirrors | Pyrex® glass, grade-A, fine-annealed |
| Correcting Plate | clear float glass |
| Telescope Dimensions, swung down | 15″ x 20″ x 37″ |