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Appendix A – Technical Specifications
Advanced Series 21019 / 21020
Specifications:
Optical Design 150mm (6.0") refractor
Focal Length 1200mm F/8
Finderscope 9x50
Mount CG-5 Equatorial
Eyepiece 20mm – 1.25" (60x)
Accessory tray
Yes
Tripod
2" Stainless Steel
Technical Specs
Highest Useful Magnification 360x
Lowest Useful Magnification 21x
Limiting Stellar Magnitude 13.4
Resolution: Rayleigh .92 arc seconds
Dawes Limit .77 arc seconds
Photographic Resolution 227 lines/mm
Light Gathering Power 459x unaided eye
Field of View: standard eyepiece .83º
Linear FOV (@1000 yds) 43.8 ft
Optical Coatings - Standard Multi-Coated
Optical tube length 50.5"
Telescope Weight 75 lbs
Advanced GT
Additional Specifications
Hand Control
Double line, 16 character Liquid Crystal Display; 19 fiber optic backlit LED buttons
Motor: Type
DC Servo motors with encoders, both axes
Max Slew Speed
3º/second
Software Precision
24bit, 0.08 arc sec calculation
Hand Control Ports
RS-232 communication port on hand control
Motor Ports
Aux Port, Autoguide Ports
Tracking Rates
Sidereal, Solar and Lunar
Tracking Modes
EQ North & EQ South
Alignment Procedures
AutoAlign, 3-Star Alignment, Quick Align, Last Align
Database
40,000+ objects, 400 user defined programmable objects.
Enhanced information on over 200 objects
Complete Revised NGC Catalog
7,840
Complete Messier Catalog
110
Complete IC Catalog
5,386
Complete Caldwell
109
Abell Galaxies
2,712
Solar System objects
9
Famous Asterisms
20
Selected CCD Imaging Objects
25
Selected SAO Stars
29,500
Total Object Database
45,492