Meade 8" LX90 Telescope with Extras

Price: 900
Condition: Used
Ad status: SOLD!

Category: Cats & casses

Contact: yaehy6c5
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Posted on: less than 5 months ago
Views: 169

Great condition. Schmidt Cassegrain. Brand new audiostar
Extras:
Hardbound manual, Meade equatorial wedge( sells for 58.95), Siris Carrying Case ( sells for 279.95) AC adaptor with auto plug. Orion Flexshield Dew Shield ( sells for 28.95) ALL INCLUDED IN THE PRICE.

Specifications and Features: Meade 8" LX90; 7", 8", and 10" LX200GPS Telescopes
TELESCOPE: 8" LX90 7"
Optical Design Schmidt-Cassegrain Maksutov-Cassegrain Schmidt-Cassegrain
Clear Aperture 203mm (8") 178mm (7") 203mm (8"); 254mm (10")
Primary Mirror Diameter 209.6mm (8.25") 209.6mm (8.25") 209.6mm (8.25"); 263.5mm (10.38")
Focal Length; Focal Ratio 2000mm f/10 2670mm f/15 2000mm f/10 (8"); 2500mm f/10 (10")
Near Focus (approx.) 25 ft. 50 ft. 25 ft. (8");
Resolving Power (arc secs.) 0.56 0.64 0.56 (8"); 0.45 (10")
Optical Coatings MgF2 on correcting plate (2-sides); standard MgF2 on correcting lens (2-sides); standard MgF2 on correcting plate (2-sides); standard
aluminum on primary & secondary mirrors aluminum on primary & secondary mirrors aluminum on primary & secondary mirrors
Ultra-High Transmission Coatings (p. 26) optional at time of purchase optional at time of purchase optional at time of purchase
Limiting Visual Magnitude (approx.) 14.0 13.5 14.0 (8");
Limiting Photographic Magnitude (approx.) 16.5 16.0 16.5 (8")
Image Scale (degs./inch) 0.72 0.54 0.72 (8" f/10); 0.57 (10" f/10)
Maximum Practical Visual Power 600X 550X 600X (8")
35mm Angular Film Coverage 0.68° x 0.97° 0.52° x 0.74° 0.68° x 0.97° (8"); 0.54° x 0.78° (10")
Optical Tube Dimensions (dia. x length) 9.1" x 16.75" 9.1" x 20.5" 9.1" x 16.75" (8"); 11.75" x 22" (10")
Secondary Mirror Obstruction (dia.; %) 3.0"-14.1% 1.9"-7.4% 3.0"-14.1% (8"); 3.7"-13.7% (10")
Telescope Mounting fork-type; double tine heavy-duty fork type; double tine heavy-duty fork-type; double tine
Setting Circle Diameters Dec: 5"; RA: 8" Dec: 5"; RA: 8.75" Dec: 5"; RA: 8.75"
RA Motor Drive System 9-speed, microprocessor-controlled, 185-speed, microprocessor-controlled, 185-speed, microprocessor-controlled,
12v DC servo motor; 4.9" LX worm gear 12v DC servo motor; 5.75" LX worm 12v DC servo motor; 5.75" LX worm
gear with Smart Drive software gear with Smart Drive software
Hemispheres of Operation North and South, switchable North and South, automatically selected by North and South, automatically selected by
GPS input or by user override GPS input or by user override
Declination Control System 9-speed, microprocessor-controlled, 185-speed, microprocessor-controlled, 185-speed, microprocessor-controlled,
12v DC servo motor; 4.9" LX worm gear 12v DC servo motor; 5.75" LX worm gear 12v DC servo motor; 5.75" LX worm gear
with Smart Drive software with Smart Drive software
Primary Mirror Lock no included (progressive tension) included (progressive tension)
Zero-Image Shift Electric Focuser optional included (4-speed) included (4-speed)
GPS Alignment no included (16-channel GPS receiver, electronic included (16-channel GPS receiver, electronic
sensors for true-level and North, with magnetic sensors for true-level and North, with magnetic
declination compensation) declination compensation)
GO TO Pointing Precision 5-arc mins. 2-arc mins. 2-arc mins.
Pointing Precision, High-Precision Mode 3-arc mins. 1-arc min. 1-arc min.
Slow-Motion Controls electric, RA and Dec manual and electric, RA and Dec. manual and electric, RA and Dec.
Bearings Dec: 1 x 1.85" dia. ball bearing in each fork; Dec: 3 x 1.83" dia. ball bearings; Dec: 3 x 1.83" dia. ball bearings;
RA: 1 x 2.25" dia. and 1 x 2" dia. ball bearings RA: 1 x 4" dia. and 1 x 2.25" dia. ball bearings RA: 1 x 4" dia. and 1 x 2.25" dia. ball bearings
Autostar Hand Controller PIC 16C57 microcontroller; Atmel 89C451 & PIC16C57 microcontrollers; Atmel 89C451 & PIC16C57 microcontrollers;
2 line x 16 alphanumeric character dis- 2 line x 16 alphanumeric character dis- 2 line x 16 alphanumeric character display;
20-button keypad, red LED backlit play; 20-button keypad, red LED backlit play; 20-button keypad, red LED backlit
Main Telescope Controller Motorola 68HC11 microprocessor; distributed intelligence architecture using 8 distributed intelligence architecture using 8
1-Megabyte flash memory (field networked microcontrollers (Motorola 68HC11, networked microcontrollers (Motorola 68HC11,
reprogrammable); 32K RAM Atmel 89C451, 3 x PIC16C62, 2 x PIC16C54, Atmel 89C451, 3 x PIC16C62, 2 x PIC16C54,
Sony digital signal processor); 3.5-Megabyte Sony digital signal processor); 3.5-Megabyte
flash memory (field reprogrammable), 32K RAM flash memory (field reprogrammable), 32K RAM
Batteries (user-supplied) [Note 1] 8 x C-cells 8 x C-cells 8 x C-cells
Battery Life (approx.) 60 hrs. 20 hrs. 20 hrs.
Onboard Celestial Object Database 30,223 objects 147,541 objects 147,541 objects
Slew Speeds RA and Dec: 1x, 2x, 8x, 16x, 64x, 128x RA and Dec: 0.01x to 1.0x sidereal, variable in RA and Dec: 0.01x to 1.0x sidereal, variable in
sidereal and 1.5°/sec., 3°/sec., 6.5°/sec. 0.01x increments; 2x, 8x, 16x, 64x, 128x sidereal; 0.01x increments; 2x, 8x, 16x, 64x, 128x sidereal;
1°/sec. to 8°/sec., variable in 0.1° increments 1°/sec. to 8°/sec., variable in 0.1° increments
Tracking Rates sidereal, lunar, or custom-selected from sidereal, lunar, or custom-selected from sidereal, lunar, or custom-selected from
2000 incremental rates 2000 incremental rates 2000 incremental rates
Materials: Tube Body aluminum aluminum aluminum
Mount Castings aluminum aluminum aluminum
Primary, Secondary Mirrors [Note 2] Pyrex®
glass Pyrex®
glass Pyrex®
glass
Correcting Plate/Lens clear float glass BK7 optical glass clear float glass
Telescope Dimensions, swung down 9.25" x 17" x 24.75" 9.25" x 17" x 34" 9.25" x 17" x 24.75" (8"); 12" x 20" x 31" (10")


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