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Meade MAX 20in ACF Telescope - Half-Meter Observatory Class Research Scope has been discontinued by Meade and is no longer available. Our product experts have helped us select these available replacements below.You can also explore other items in the Astronomy Products, Telescopes yourself to try and find the perfect replacement for you!
Clear Aperture: | 20" (508mm) |
Optical Design: | Advanced Coma Free (ACF) |
Optical Coatings: | Ultra-High Transmission Coatings (UHTC) |
Resolving Power (Dawes Limit): | .228 arc seconds |
Focal Length, Focal Ratio: | 4064mm, f/8 |
Mount type: | MAX Robotic Equatorial Mount |
Gear pitch diameter: | 13.625" |
Periodic error correction: | Five (5) arc seconds, both axes |
Latitude: | 0-90° |
Number of Gear teeth: | 652 (RA & DEC) |
Control Panel: | 2 multi-function, multi-port panels |
Focusing: | 4-speed front focusing mechanism |
GPS: | 16-channel GPS receiver. With North sensor. |
Pointing Precision: | High Precision Mode 5-arc min. |
Autostar II Hand Controller: | Included (147,541 object database) |
Alignment: | Equatorial |
North electronic sensor: | Included |
Temperature Control: | Thermal stabilization fan |
Slew Speeds: | RA and Dec |
Tracking Rates: | Sidereal, lunar, or custom-selected from 2000 incremental rates |
Primary, Secondary Mirror: | Difraction limited, low-expansion borosilicate |
Correcting Plate/Lens: | High-spectral transmission Borofloat from world-renowned Schott AG Germany |
Power: | 12VDC, 5amp power supply required |
Counterweights: | Requires 2 - 35lb. Counterweights (included) |
Control Panel: | 2 multi-function, multi-port panels |
Focus 4-speed front focusing mechanism: | included |
GPS, North sensors included: | 16-channel GPS receiver (on Mount) |
Pointing Precision: | High Precision Mode 1-arc min. |
Autostar® II Hand Controller: | included (147,541 object database) |
Alignment: | Equatorial |
North electronic sensors: | Included |
Temperature Control: | Thermal stabilization fan |
Power: | 12VDC, 5amp power supply required |
Slew Speeds: | |
Tracking Rates: | sidereal, lunar, or custom-selected from 2000 incremental rates All models |
Primary, Secondary Mirrors: | Pyrex glass, fine-annealed |
Correcting Plate/Lens: | Borofloat |
Counterweights: | Requires 5 - 35lb. Counterweights (included) |
Accessories: | |
Total Net Weight: | 190 pounds (OTA only) |