Meade LX850 12" F/8 ACF Telescope
Catadioptric telescope. Objective lens diameter: 304.8mm. Focal length: 2438mm
Product ID | 71703 |
Brand | Meade Instruments Corp. |
Warranty | 2 years |
EAN | 0643824209084 |
Package size (LxWxH) | 100x100x79 cm |
Shipping Weight | 123.7 kg |
The LX850 12" F/8 ACF Telescope consists of an Optical Tube Assembly (OTA), Starlock dual imager full-time autoguider, AutoStar II GoTo System, a German Equatorial Mount, and a heavy-duty tripod.
The telescope’s OTA features 12" f/8 ACF optics with high-contrast baffling that allows for a wider, flatter field and ensures that pinpoint star images are visible even at the very edge of the field of view. Meade’s UHTC on the OTA optics reduce light loss through reflection or transmission, and allow for high image brightness and contrast. Thanks to the ACF optics, this telescope ensures reduction in astigmatism and elimination of diffraction spikes. The LX850 telescope comes with the HD-60 25mm eyepiece that has a large, 60° apparent field of view and a long eye relief for effortless, comfortable observation.
The OTA is held in its place by the precision-machined, heavy-duty German Equatorial Mount. This mount is built using high-quality stainless steel and aircraft grade 6061-T6 aluminum alloy for durability. The mount comes with Meade’s Starlock full-time autoguider that is capable of capturing even a faint 11th magnitude star.
The telescope comes with the Autostar II GoTo system that can command it to automatically slew to any of the 144,000 objects in its library. Other features include a GPS receiver, precision roller bearings on both axes, precision pointing and assisted drift alignment, 5.8" 225-tooth polished bronze worm/gear drives with low periodic error, fine manual adjustment controls on both axes, illuminated reticle output port, and internal cable routing. Two 11.8kg counterweights that come with the mount help balance the OTA’s weight. The mount is capable of handling a payload of up to 40kg. The whole system is mounted on a steady tripod that features 3" thick legs. The height of the tripod is fully adjustable from 29 to 45".
Features:
- 12" f/8 advanced coma free optics – 2438mm focal length
- Meade Ultra-High Transmission Coatings (UHTC)
- Crayford focuser
- 40kg instrument capacity
- StarLock automatic guider
- AutoStar II GoTo system
- Heavy-duty tripod
- Zero image shift electronic micro-focuser
Product ID | 71703 |
Brand | Meade Instruments Corp. |
Warranty | 2 years |
EAN | 0643824209084 |
Package size (LxWxH) | 100x100x79 cm |
Shipping Weight | 123.7 kg |
Optical design | catadioptric |
Optical scheme | coma-free Schmidt–Cassegrain |
Optics material | borosililate glass with a low coefficient of thermal expansion |
Objective lens diameter (aperture), mm | 304 |
Focal length, mm | 2438 |
Lowest practical power, x | 51 |
Highest practical power, x | 750 |
Aperture ratio | f/8 |
Resolution threshold, arcseconds | 0.38 |
Limiting stellar magnitude | 14.8 |
Focusing | by moving the main mirror |
Eyepiece barrel diameter, in | 1.25 |
Finderscope | optical, 8x50 with reticle |
Focuser | Crayford, 2-speed (1:7), backlash-free |
Tripod | aluminum |
Tripod height (adjustable), mm | adjustable, 740–1140 |
Tripod weight, kg | 16.3 |
Telescope control | autoguide |
Mount | equatorial |
Setting and positioning system | LightSwitch |
GPS receiver | integrated |
Latitude adjustment range, ° | 10 — 70 |
Bearings | roller, 80mm |
Mount dimensions, mm | 305x203x355 |
Mount weight, kg | 27.2 |
Maximum payload, kg | 40.8 |
Counterweights | 2 |
Counterweight rod length, mm | 305 |
Counterweight rod diameter, mm | 45 |
Counterweight weight, kg | 11.8 |
Slew rate | up to 3 degrees per second |
Tracking rate | customizable from 0.01 to 1x sidereal speed, 1x, 2x, 8х, 16x (1/4 °, 1/2 °, 1 °, 3 °) |
Positioning accuracy | 1 arcminute (+/-) |
Speed selection | automatic (guiding), manual (if position is corrected) |
Tracking mode | equatorial |
Periodic error correction (PEC) | ✓ |
Automatic horizontal alignment | ✓ |
Automatic magnetic pole search | ✓ |
Reference stars | ✓ |
Ports | AUX (universal port for connecting Meade accessories), RS-232, AutoStar remote control connector, StarLock system, 12V accessory power slot |
Autoguider | ✓ |
Hand controller | Autostar II |
Programmable options | night sky excursion mode with audio lecture, automatic search in the database, autoguiding (GoTo), time estimate of astronomical events |
Objects database | 144,000 |
Update via Internet | for catalogues of artificial Earth satellites, asteroids, comets |
Ability to connect additional equipment | yes |
Power supply | 12V car cigarette lighter, 220V network adapter, 12V |
Optical tube mounting mode | dovetail plate |
Dovetail mount | ✓ |
Optical tube weight, kg | 25.5 |
User level | professionals |
Observed object | planets of the Solar System and deep-sky objects |