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Appendix a - technical specifications – Celestron NexStar 6 SE User Manual

Page 39

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Appendix A - Technical Specifications

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NexStar 6SE (#11068)

NexStar 8SE (#11069)

Design

Schmidt Cassegrain Optical
Design

Schmidt Cassegrain Optical
Design

Aperture

6 inches (150mm)

8 inches (200mm)

Focal Length

60 inches (1500mm)

80 inches (2032mm)

F/ratio of the Optical System

10

10

Primary Mirror: Diameter
Coatings

150mm
Starbright XLT®

100mm
Starbright XLT®

Secondary Mirror Spot Size
Secondary Obstruction

2.2"
37% by diameter; 14% by area

2.5"
35% by diameter; 12% by area

Corrector Plate: Material
Coatings

Optical Quality Crown Glass
Starbright XLT®

Optical Quality Crown Glass
Starbright XLT®

Highest Useful Magnification

354x

480x

Lowest Useful Magnification (7mm exit pupil)

21x

29x

Resolution: Rayleigh Criterion
Dawes Limit

.92 arc seconds
.77 arc seconds

.68 arc seconds
.57 arc seconds

Light Gathering Power

459x unaided eye

843x unaided eye

Near Focus standard eyepiece or camera

~ 20 feet

~ 25 feet

Field of View: Standard Eyepiece

.8º

.64º

Linear Field of View (at 1000 yds)

42 feet

33.6 feet

Magnification: Standard Eyepiece

60x

81x

Optical Tube Length

16 inches

17 inches

Weight of Telescope

21 Lbs.

24 Lbs.

Weight of Tripod

9 lbs

9 lbs

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Input Voltage

12 V DC Nominal

Batteries Required

8 AA Alkaline

Power Supply Requirements

12 VDC-750 mA (Tip positive)

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Motor: Type
Resolution

DC Servo motors with encoders, both axes
.26 arc sec

Slew speeds

Nine slew speeds: 5º /sec, 3º /sec, 1º/sec, .5/sec, 32x, 16x, 8x, 4x, 2x

Hand Control

Double line, 16 character Liquid Crystal Display
19 fiber optic backlit LED buttons

Fork Arm

Cast aluminum, with integrated hand control receptacle

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Software Precision

16 bit, 20 arc sec. calculations

Ports

RS-232 communication port on hand control

Tracking Rates

Sidereal, Solar, Lunar and King

Tracking Modes

Alt-Az, EQ North & EQ South

Alignment Procedures

SkyAlign, Auto Two-Star, Two-Star, One-Star, Solar System Align

Database

200 user defined programmable object.
Enhanced information on over 200 objects

Total Object Database

+40,000