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Telescope
Ophcai Design
8" LX200I/10
an-Schmidt-Cassegrain
Catadioptric
10" LX200f/10
Schmidt-Cassegrain Catadioptric
200 f/10
Schmidt-Cassegrain Catadioptric
Clear Aperture
203mm (8") 254mm (10") 305mm (12")
Primary Mirror Diameter
209.6mm (8.25) 263.5mm (10.375) 314.3mm (12.375")
Focal Length
2000mm (80") 2500mm (100") 3048mm (120")
Focal Ratio
f/10 f/10
f/10
Resolution
.56 arc sec
.45 arc sec
.375 arc sec
Super Multi-Coatings
Standard Standard Standard
Limiting Visual Magnitude (approx)
14.0 14.5 15.0
Limiting Photographic Magnitude (approx)
16.5 17.0
17.5
Image Scale (°/inch)
0.72°/inch 0.57°/inch 0.48°/inch
Maximum Practical Visual Power
500X
625X
750X
Near Focus
25'
50'
75'
Optical Tube Size
9.1" Dia. x 16" Long
11.75" Dia. x 22" Long
13.6" Dia. X25" Long
Secondary Mirror Obstruction
3.0" (14.1%)
3.7" (13.7%)
4.0" (11.1%)
Telescope Mounting
Heavy-Duty Fork-Type Double
Tine
Heavy-Duty Fork-Type Double Tine Heavy-Duty Fork-Type Double Tine
Setting Circle Diameters
Dec.: 6"; R.A.: 8.75" Dec.: 6"; R.A.: 8.75" Dec.: 6"; R.A.: 8.75"
RA Motor Drive System
9-speed, microprocessor
controlled 12v. DC servo motor;
5.75" worm gear with Smart Drive
9-speed, microprocessor controlled
12v. DC servo motor; 5.75" worm
gear with Smart Drive
9-Speed, microprocessor controlled
12v. DC servo motor; 5.75" worm
gear with Smart Drive
Hemispheres of Operation
North and South -
switchable
North and South -
switchable
North and South -
switchable
Declination Control System
9-speed, DC servo controlled
5.75" worm gear with Dec drift
software
9-speed, DC servo controlled 5.75"
worm gear with Dec drift software
9-speed, DC servo controlled 5.75"
worm gear with Dec drift software
Motor Drive Gear Diameter
5-3/4" Worm Gear 5-3/4" Worm Gear 5-3/4" Worm Gear
Manual Slow-Motion Controls
Dec. and R.A. Dec. and R.A. Dec. and R.A.
Hand Controller
Motorola 68HC05 microcontroller;
2 line x 16 alphanumeric character
display; 19 button keypad,
red LED
backlit
Motorola 68HC05 microcontroller; 2
line x 16 alphanumeric character
display; 19 button keypad,
red LED
backlit
Motorola 68HC05 microcontroller; 2
line x 16 alphanumeric character
display; 19 button keypad,
red LED
backlit
Main Controller
16 MHz 68000 microprocessor; 1
Meg program memory 16KRAM;
512 byte non-volatile memory
(EEROM)
16 MHz 68000 microprocessor; 1 Meg
program memory
16K RAM; 512 byte
non-volatile memory (EEROM)
16 MHz 68000 microprocessor; 1 Meg
program memory 16K RAM; 51 2 byte
non-volatile memory (EEROM)
Telescope Size, Swung Down
9.25" x 16"x25"
12" x 19" x 31"
15"x20"x37"
35mm Angular Film Coverage
0.97° x 0.68° 0.78° x 0.54° 0.65° x 0.45°
35mm Linear Film Coverage @:
50" 6.2" x 8.7" 5.0" x 7.0" 4.1" x 5.8"
500"
6.0
1
x 8.5'
4.8' x 6.8' 4.0' x 5.7'
3000"
36.0' X 51.0'
28.8' x 40.8'
24.0' x 34.0'
Tele-Extender Used Without Eyepiece @:
50'
6.8" X 8.5" 4.6" x 6.8" 3.5" x 5.7"
500'
4.9' x 7.2' 4.0' x 5.8' 3.3' x 4.8'
3000'
31'x45'
25' X 36'
21'x30'
Net Telescope Weights (approx)
Telescope
37# 61# 70#
Optional Equatorial Wedge
7# N/A N/A
Optional Super Wedge
N/A 26# 26#
Field Tripod
20# 20# 50#
Accessories
8# 8#
8#
Shipping Weights (approx)
Telescope
64# (w/ case) 69#
95# (w/ case)
Equatorial Wedge (optional)
9# N/A
N/A
Super Wedge (optional)
N/A 38#
38#
Field Tripod
26# 26#
57#
Case (for 1 0" models)
30# 30#
N/A
Accessories
5# 5#
10#