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ENGLISH I 21
APPENDIX A: TECHNICAL SPECIFICATIONS
OPTICAL
SPECIFICATIONS
Model # 22084
NexStar 5SLT
Model # 22088
NexStar 6SLT
Optical Design Schmidt-Cassegrain Schmidt-Cassegrain
Aperture 125mm 150mm
Focal Length 1250mm 1500mm
Focal Ratio 10 10
Optical Coatings StarBright XLT StarBright XLT
Highest Useful
Magnification
295x 354x
Resolution: Rayleigh
Criterion Dawes Limit
1.11 arc seconds
0.93 arc seconds
0.93 arc seconds
0.77 arc seconds
Light Gathering Power 329x unaided eye 459x unaided eye
Field of View:
Standard Eyepiece
1º .83º
Linear Field of View
(at 1000 yds)
53 ft 44 ft
Eyepiece Magnification
50x (25mm)
139x (9mm)
60x (25mm)
167x (9mm)
Optical Tube Length 13” 16”
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