Celestron CPC 925 GPS XLT Computerized Telescope Instruction Manual - Page 48

Appendix A - Technical Specifications

Page 48 highlights

Appendix A - Technical Specifications 0 Optical Specification Design Aperture Focal Length F/ratio of the Optical System Primary Mirror: Material Coatings Central Obstruction Corrector Plate: Material Coatings Highest Useful Magnification Lowest Useful Magnification (7mm exit pupil) Magnification: Standard Eyepiece (40mm Pl) Resolution: Rayleigh Criterion Dawes Limit Light Gathering Power Near Focus w/ standard eyepiece or camera Field of View: Standard Eyepiece : 35mm Camera Linear Field of View (at 1000 yds) Optical Tube Length Weight of Telescope Weight of Tripod CPC 800 - #11073 Schmidt-Cassegrain Catadioptric 8" (203.2mm) 2032mm 10 Fine Annealed Pyrex Starbright Coatings - 5 step multilayer process Optional:Starbright XLT Coating 2.5" Optical Quality Crown Glass A-R Coatings both sides 480x (~4mm eyepiece) 29x (~70mm eyepiece) 51x .68 arc seconds .57 arc seconds 843x ~25 feet .9º 1º x .68º 47 ft. 17" 42 lbs 19 lbs CPC 925 - #11074 Schmidt-Cassegrain Catadioptric 9.25" (235mm) 2350mm 10 Fine Annealed Pyrex Starbright Coatings - 5 step multilayer process Optional:Starbright XLT Coating 3..35" Optical Quality Crown Glass A-R Coatings both sides 555x (~4mm eyepiece) 34x (~70mm eyepiece) 59x .59 arc seconds .49 arc seconds 1127x ~40 feet .78º .9º x .6º 41 ft. 22" 58 lbs 19 lbs CPC 1100 - #11075 Schmidt-Cassegrain Catadioptric 11" (279mm) 2800mm 10 Fine Annealed Pyrex Starbright Coatings - 5 step multilayer process Optional:Starbright XLT Coating 3.75" Optical Quality Crown Glass A-R Coatings both sides 660x (~4mm eyepiece) 40x (~70mm eyepiece) 70x .50 arc seconds .42 arc seconds 1593x ~100 feet .65º .72º x .50º 34.5 ft. 23" 65 lbs 19 lbs Electronic Specifications Input Voltage Maximum Minimum Power Supply Requirements GPS 12 V DC Nominal 15 V DC Max. 9 V DC Min. 12 VDC-1.5A (Tip positive) Internal 16 channel Mechanical Specifications Motor: Type Resolution Slew speeds Hand Control Fork Arm Gears Bearings Optical Tube DC Servo motors with encoders, both axes .1406 arc sec Nine slew speeds: 3º /sec, 2º /sec, .5º/sec, 64x, 16x, 8x, 4x, 1x, .5x Double line, 16 character Liquid Crystal Display 19 fiber optic backlit LED keypad Dual Fork tine cast aluminum with detachable HC holder 5.625", precision aluminum gears on both axes, 180 tooth. Brass worm gear 9.8" Azimuth Bearing Aluminum Software Specifications 1 Software Precision Ports Period Error Correction Tracking Rates Tracking Modes Alignment Procedures Database Complete Revised NGC Catalog Complete Messier Catalog Complete IC Catalog Complete Caldwell Abell Galaxies Solar System objects Famous Asterisms Selected CCD Imaging Objects Selected SAO Stars 24 bit, .08 arc sec. calculations RS-232 communication port on hand control, Autoguider Port, 2 Auxiliary Port Permanently programmable Sidereal, Solar, Lunar Alt-Az, EQ North & EQ South Sky Align, Auto Two-Star Align, Two-Star Align, Solar System Align, EQ North Align & EQ South Align 40,000+ objects, 99 user defined programmable objects. Enhanced information on over 200 objects 7,840 110 5,386 109 2,712 9 20 25 29,500 48

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Appendix A - Technical Specifications
Optical Specification
CPC 800 - #11073
CPC 925 - #11074
CPC 1100 - #11075
Design
Schmidt-Cassegrain Catadioptric
Schmidt-Cassegrain Catadioptric
Schmidt-Cassegrain Catadioptric
Aperture
8" (203.2mm)
9.25" (235mm)
11" (279mm)
Focal Length
2032mm
2350mm
2800mm
F/ratio of the Optical System
10
10
10
Primary Mirror:
Material
Coatings
Fine Annealed Pyrex
Starbright Coatings - 5 step multi-
layer process
Optional:Starbright XLT Coating
Fine Annealed Pyrex
Starbright Coatings - 5 step multi-
layer process
Optional:Starbright XLT Coating
Fine Annealed Pyrex
Starbright Coatings - 5 step multi-
layer process
Optional:Starbright XLT Coating
Central Obstruction
2.5"
3..35"
3.75"
Corrector Plate:
Material
Coatings
Optical Quality Crown Glass
A-R Coatings both sides
Optical Quality Crown Glass
A-R Coatings both sides
Optical Quality Crown Glass
A-R Coatings both sides
Highest Useful Magnification
480x (~4mm eyepiece)
555x (~4mm eyepiece)
660x (~4mm eyepiece)
Lowest Useful Magnification
(7mm exit pupil)
29x
(~70mm eyepiece)
34x
(~70mm eyepiece)
40x
(~70mm eyepiece)
Magnification: Standard Eyepiece (40mm Pl)
51x
59x
70x
Resolution:
Rayleigh Criterion
Dawes Limit
.68 arc seconds
.57 arc seconds
.59 arc seconds
.49 arc seconds
.50 arc seconds
.42 arc seconds
Light Gathering Power
843x
1127x
1593x
Near Focus w/ standard eyepiece or camera
~25 feet
~40 feet
~100 feet
Field of View: Standard Eyepiece
: 35mm Camera
.9º
1º x .68º
.78º
.9º x .6º
.65º
.72º x .50º
Linear Field of View (at 1000 yds)
47 ft.
41 ft.
34.5 ft.
Optical Tube Length
17"
22"
23"
Weight of Telescope
42 lbs
58 lbs
65 lbs
Weight of Tripod
19 lbs
19 lbs
19 lbs
Electronic Specifications
Input Voltage
Maximum
Minimum
12 V DC Nominal
15 V DC Max.
9 V DC
Min.
Power Supply Requirements
12 VDC-1.5A (Tip positive)
GPS
Internal 16 channel
Mechanical Specifications
Motor: Type
Resolution
DC Servo motors with encoders, both axes
.1406 arc sec
Slew speeds
Nine slew speeds: 3º /sec, 2º /sec,
.5º/sec, 64x, 16x, 8x, 4x, 1x, .5x
Hand Control
Double line, 16 character Liquid Crystal Display
19 fiber optic backlit LED keypad
Fork Arm
Dual Fork tine cast aluminum with detachable HC holder
Gears
5.625", precision aluminum gears on both axes, 180 tooth. Brass worm gear
Bearings
9.8" Azimuth Bearing
Optical Tube
Aluminum
Software Specifications
Software Precision
24 bit, .08 arc sec. calculations
Ports
RS-232 communication port on hand control, Autoguider Port,
2 Auxiliary Port
Period Error Correction
Permanently programmable
Tracking Rates
Sidereal, Solar, Lunar
Tracking Modes
Alt-Az, EQ North & EQ South
Alignment Procedures
Sky Align, Auto Two-Star Align, Two-Star Align, Solar System Align, EQ North
Align & EQ South Align
Database
40,000+ objects, 99 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