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Meade LXD75 SN-8AT 8" 812mm f/4.0 Schmidt-Newtonian Telescope, Motorized German-Type Equatorial Mount with UHTC Coatings, Autostar Computerized Hand Controller, Autostar Suite Software, 8x50 Finderscope & Tripod
Mfr. Part: 08047502 SKU: MD75SN8AU
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Item Includes
LXD75 SN-8AT 8.0"/203mm Schmidt-Newtonian Telescope with Ultra-High Transmission (UHTC) Coatings - Motorized German-Type Equatorial Mount - #497 Autostar Computerized Hand Controller - Autostar Suite Software - External Battery Pack (uses 8 "D" size Batteries, not included) - 1.25" 90° Erect Image Diagonal - 8x50 Finderscope - Series 4000 1.25" 26mm Super Plossl Eyepiece (31x) - 1.25" Eyepiece Adapter - Aluminum Tripod with Accessory Shelf - Meade One-Year Warranty
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Description
· Meade's Schmidt-Newtonian optics yield pinpoint stellar images over an extremely wide field-of-view with only half the coma of standard Newtonians of the same focal ratio.
· Schmidt-Newtonian optics are mounted in precision-machined aluminum cells, which are then mounted in sturdy steel tubes which are baked with high-grade textured enamel paint. The optical tube assembly is closed, reducing air currents inside the tube. This prevents distortion of an otherwise sharp image. Plus, a closed tube significantly helps keep the optics clean.
· The Corrector Lens fully corrects for spherical aberration and provides pinpoint star images. Water white glass is used in all Schmidt-Newtonian corrector lenses to maximize light transmission. The use of water white glass results in an increase of light transmission in excess of 10%, as compared to competitive telescopes using soda lime glass.
· Schmidt-Newtonian corrector lenses and mirrors are individually figured to create a superior optical system which is renowned for its exquisite smoothness and performance. Premium-grade Pyrex mirrors are used in all Schmidt-Newtonian optical systems, providing exceptional thermal stability versus competing models using standard plate glass.
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Features
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Standard Features |
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Telescope Mounting: LXD75, German-type |
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Setting Circle Diameters, RA and Dec.: 2.25" |
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Polar Illuminated Viewfinder: included |
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RA Control System: 9-speed, microprocessor-controlled, 12v DC, 72mm (2.83") wormgear |
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Declination Control System: 9-speed, microprocessor-controlled, 12v DC, 72mm (2.83") worm gear |
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Hemispheres of Operation: North and South |
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GO TO Pointing Precision (approx.): 15 arc mins. |
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Slow-Motion Controls: electric, both axes |
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Bearings: 2 Ball Bearings RA: outer 1x58mm, 1x47mm; inner 1x45mm, 1x35mm DEC: outer 1x72mm, 1x47mm; inner 1x55mm, 1x30mm |
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AutoStar Hand Controller: PIC 16C57 microcontroller; 2 line x 16 alphanumeric character display; 20-button keypad, red LED backlit |
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Main Telescope Controller: Motorola 68HC11 microprocessor; 1-Megabyte flash memory (field reprogrammable); 32K RAM |
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Batteries (user-supplied): 8 x D-cells. LXD75-Series models may alternatively bepowered from an automobile cigarette lighter plug, using the #607 Power Cord, orfrom a 115v AC home outlet, using the #547 AC Adapter; both the #607 and the #547 include 25 ft. cords. (not included) |
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Battery Life (approx.): 40 hours |
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Onboard Celestial Object Database: 30,223 objects |
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Slew Speeds both axes: 1x, 2x, 8x, 16x, 64x, 128x sidereal; 1.5°/sec., 3°/sec., 4.5°/sec. |
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Tracking Rates: sidereal, lunar, or custom-selected from 2000 incremental rates |
Specifications
| Model | LXD75 SN-8AT with Ultra-High Transmission Coatings |
| Optical Design | Schmidt-Newtonian Telescope |
| Clear Aperture | 203mm (8") |
| Focal Length, Focal Ratio | 812mm; f/4 |
| Resolving Power (arc secs.) | 0.56 |
| Optical Coatings | MgF2; standard aluminum |
| Ultra-High Transmission (UHTC) Coatings |
Available optionally at time of purchase only
THIS VERSION INCLUDES UHTC Coatings |
| Limiting Visual Magnitude (approx) | 14 |
| Limiting Photographic Magnitude (approx) | 16.5 |
| Image Scale (degs./inch) | 1.78°/inch |
| Maximum Practical Visual Power | 500x |
| 35mm Angular film Coverage | 1.66° x 2.37° |
| Optical Tube Dimensions (dia. x length) | 10" x 29.5" |
| Secondary Mirror Obstruction (dia.; %) | 3.10"; 15.0% |
| Counterweights | 2 x 10 lbs. |
| Tube Body | enameled steel |
| Mount Castings | aluminum |
| Primary, Secondary Mirrors | Pyrex glass |
| Correcting Plate/Lens | clear float glass |
| Total Net Telescope Weight | 69 lbs. |
| Telescope Shipping Weight (approx.) | 91 lbs. |
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