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Total instrument capacity 500 lbs.
Aperture 16" & 20"
Optical design Advanced Coma-Free
Optical coatings UHTCT
Mount Robotic Equartorial
Gear pitch diameter 13.625"
Periodic error 2 arc sec.
Latitude 0-90°
No. of drive gear teeth 652 (RA & DEC)
MAX Mount™ $29,999
MAX 16" $39,999
MAX 20" $49,999
16" LX400-ACF™ on MAX Mount™
 

16" LX400-ACF™ on MAX Robotic German
Equatorial Mount with Tripod
[click here to enlarge diagram]

20" LX400-ACF™ on MAX Robotic
German Equatorial Mount with Pier
[click here to enlarge diagram]

 
MAX Mount Only 16" LX400-ACF 20" LX400-ACF
Optical Design   Advanced Coma-Free Advanced Coma-Free
Clear Aperture   16" 20"
UHTC™ Coatings Standard   Ultra-High Transmission Coatings (UHTCT) Ultra-High Transmission Coatings (UHTCT)
Resolving Power (Dawes Limit)   .285 arc seconds .228 arc seconds
Focal Length, Focal Ratio   3251mm, f/8 4064mm, f/8
Telescope Mounting   MAX Robotic Equatorial Mount MAX Robotic Equatorial Mount
Periodic Error Correction Both axes

Five (5) arc seconds (raw); Two (2) arc seconds with PECTOOL

Control Panel 2 multi-function, multi-port panels 2 multi-function, multi-port panels 2 multi-function, multi-port panels
Focus 4-speed front focusing mechanism   included included
GPS, North sensors included 16-channel GPS receiver 16-channel GPS receiver (on Mount) 16-channel GPS receiver (on Mount)
Pointing Precision High Precision Mode 1-arc min. High Precision Mode 1-arc min. High Precision Mode 1-arc min.
Autostar® II Hand Controller included (147,541 object database) included (147,541 object database) included (147,541 object database)
Alignment Equatorial Equatorial Equatorial
North electronic sensors Included Included Included
Temperature Control   Thermal stabilization fan Thermal stabilization fan
Power 12VDC, 5amp power supply required 120VAC, 5amp power supply required 12VDC, 5amp power supply required
Slew Speeds:

RA and Dec: 0.01x to1.0x sidereal, variable in0.01x increments; 2x, 8x, 16x, 64x, 128x sidereal; 1°/sec. to 2°/sec., variable in 0.1° increments All models

Tracking Rates

sidereal, lunar, or custom-selected from 2000 incremental rates All models

Primary, Secondary Mirrors   Pyrex® glass, fine-annealed Pyrex® glass, fine-annealed
Correcting Plate/Lens   Borofloat Borofloat
Counterweights   Requires 4 - 35lb. Counterweights (included) Requires 5 - 35lb. Counterweights (included)
Accessories  

8 x 50mm viewfinder, 2.0" diagonal mirror with 1.25" adapter, UltraWide 24mm eyepiece. (16" and 20" models)

Total Net Weight 329 pounds (no counterweights) 140 pounds (OTA only) 190 pounds (OTA only)
 
 
Weights and Dimensions Weights Dimensions
RA Housing Assembly 66 pounds L = 20.75"; W = 18.85"; H = 20.34".
Dec Housing Assembly 75 pounds L = 18.25"; W = 15"; H = 20.45".
Counterweight Shaft Assembly 32 pounds without counterweights L = 38.1"; W = 1.25"
Individual Counterweight 35 pounds L = 5.9"; W = 5.9"; H = 2.96".
Portable Tripod 81 pounds Height: 26.5 inches; Footprint radius: 30 inches
Permanent Pier 39 pounds Minimum Height: 22"; Maximum Height: ?? Tube Diameter: 11.9"
 
Optical Tube Assembly (OTA)  
16” LX400-ACF OTA 140 pounds L = 33"; W = 21"; H = 21".
20” LX400-ACF OTA 190 pounds L = 40"; W = 25.7"; H = 25.7".
 
16"OTA + MAX Mount™ + Counterweights 609 pounds L = 40"; W = 25.7"; H = 97.67".
20" OTA + MAX Mount™ + Counterweights 694 pounds L = 40"; W = 25.7"; H = 99.67".
 
Optional Accessories  
20 pound Counterweight  
Dovetail Instrument mount assembly  
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