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20" LX400-ACF™ on MAX Robotic |
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| MAX | Mount Only | 20" LX400-ACF |
| Optical Design | Advanced Coma-Free | |
| Clear Aperture | 20" | |
| UHTC™ Coatings Standard | Ultra-High Transmission Coatings (UHTCT) | |
| Resolving Power (Dawes Limit) | .228 arc seconds | |
| Focal Length, Focal Ratio | 4064mm, f/8 | |
| Telescope Mounting | MAX Robotic Equatorial Mount | |
| Periodic Error Correction Both axes | Five (5) arc seconds |
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| Control Panel | 2 multi-function, multi-port panels | 2 multi-function, multi-port panels |
| Focus 4-speed front focusing mechanism | included | |
| GPS, North sensors included | 16-channel GPS receiver | 16-channel GPS receiver (on Mount) |
| Pointing Precision | High Precision Mode 1-arc min. | High Precision Mode 1-arc min. |
| Autostar® II Hand Controller | included (147,541 object database) | included (147,541 object database) |
| Alignment | Equatorial | Equatorial |
| North electronic sensors | Included | Included |
| Temperature Control | Thermal stabilization fan | |
| Power | 12VDC, 5amp power supply required | 12VDC, 5amp power supply required |
| Slew Speeds: | RA and Dec: 0.01x to1.0x sidereal, variable in0.01x increments; 2x, 8x, 16x, 64x, 128x sidereal; 1°/sec. to 2°/sec., variable in 0.1° increments All models |
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| Tracking Rates | sidereal, lunar, or custom-selected from 2000 incremental rates All models |
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| Primary, Secondary Mirrors | Pyrex® glass, fine-annealed | |
| Correcting Plate/Lens | Borofloat | |
| Counterweights | Requires 2 - 35lb. Counterweights (included) | Requires 5 - 35lb. Counterweights (included) |
| Accessories | ||
| Total Net Weight | 329 pounds (no counterweights) | 190 pounds (OTA only) |
| Weights and Dimensions | Weights | Dimensions |
| RA Housing Assembly | 66 pounds | L = 20.75"; W = 18.85"; H = 20.34". |
| Dec Housing Assembly | 75 pounds | L = 18.25"; W = 15"; H = 20.45". |
| Counterweight Shaft Assembly | 32 pounds without counterweights | L = 38.1"; W = 1.25" |
| Individual Counterweight | 35 pounds | L = 5.9"; W = 5.9"; H = 2.96". |
| Portable Tripod | 81 pounds | Height: 26.5 inches; Footprint radius: 30 inches |
| Permanent Pier | 39 pounds | Minimum Height: 22"; Maximum Height: ?? Tube Diameter: 11.9" |
| Optical Tube Assembly (OTA) | ||
| 20” LX400-ACF OTA | 190 pounds | L = 40"; W = 25.7"; H = 25.7". |
| 20" OTA + MAX Mount™ + Counterweights | 694 pounds | L = 40"; W = 25.7"; H = 99.67". |
| Optional Accessories | ||
| 20 pound Counterweight | ||
| Dovetail Instrument mount assembly | ||
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