Celestron OMNI XLT 102 用户手册
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Appendix A Technical Specifications
Omni XLT Series
21088
21092
21090
21094
31057
11084
Omni XLT 102
Omni XLT 102ED
Omni XLT 120
Omni XLT 150R
Omni XLT 150
Omni XLT 127
Optical Design
Refractor
Refractor
Refractor Refractor Newtonian
Schmidt-Cassegrain
Aperture
102mm (4.0")
102mm (4.0")
120mm (4.7")
150mm (6.0")
150mm (6.0")
127mm (5.0")
Focal Length
1000mm
900mm
1000mm
750mm
750mm
1250mm
Focal Ratio
f/10
f/9
f/8.3
f/5
f/5
f/10
Optical Coatings
Starbright XLT Starbright
XLT Starbright XLT
Starbright XLT
Starbright XLT
Starbright XLT
Finderscope 6x30
6x30
6x30
6x30
6x30
6x30
Star Diagonal
1.25"
1.25" 1.25"
1.25"
n/a 1.25"
Eyepiece - std. 1.25" MC 50° FOV
25mm (40x)
25mm (36x)
25mm (40x)
25mm (30x)
25mm (30x)
25mm (50x)
Mount - Equatorial
Omni CG-4
Omni CG-4
Omni CG-4
Omni CG-4
Omni CG-4
Omni CG-4
Tripod Legs
1.75" Stainless
1.75 Stainless
1.75" Stainless
1.75" Stainless
1.75" Stainless
1.75" Stainless
Counterweights
3.2kg (7#) &
1.8kg (4#)
3.2kg (7#) &
1.8kg (4#)
3.2kg (7#) &
1.8kg (4#)
3.2kg (7#) &
1.8kg (4#)
3.2kg (7#) &
1.8kg (4#)
3.2kg (7#) &
1.8kg (4#)
Highest Useful Magnification
240x
240x
283x
360x
360x
300x
Lowest Useful Magnification
15x
15x
17x
21x
21x
18x
Limiting Stellar Magnitude
12.5 12.5 12.9
13.4
13.4
13.1
Resolution: Raleigh -arc seconds
1.36
1.36
1.19
0.92
0.92
1.1
Resolution: Dawes Limit " "
1.14
1.14
0.97
0.76
0.76
0.91
Light Gathering Power
212x
212x
294x
459x
459x
329x
Field of View - Angular w/25mm ep
1.25°
1.4°
1.25°
1.67°
1.67°
1.0°
Field of View - Linear w/25mm ep
66 ft. @1000yds
74 ft. @1000yds
66 ft. @1000yds
88 ft. @ 1000yds
88 ft. @1000yds
53 ft. @1000yds
Optical Tube Length
39.5" (1003mm)
37.0" (940mm)
40.0" (1016mm)
34.0" (864mm)
26.5" (673mm)
11.0" (279mm)
Optical Tube Weight
9.5 # ( 4.3kg)
8.0# (3.6kg)
12.5 # ( 5.7kg)
16.0 # (7.3kg)
12.0 # (5.4kg)
6.5 # ( 3.0kg)
Mount & Counterweights - Weight
21.0 # ( 9.5kg)
21.0 # ( 9.5kg)
21.0 # ( 9.5kg)
21.0# (9.5kg)
21.0 # ( 9.5kg)
21.0 # ( 9.5kg)
Tripod Weight
12.5 # ( 5.7kg)
12.5 # ( 5.7kg)
12.5 # (5.7kg)
12.5 # (5.7kg)
12.5 # ( 5.7kg)
12.5 # ( 5.7kg)
Total Weight
43.0 # ( 19.5kg)
41.5 # ( 18.8kg)
46.0 # ( 20.9kg)
49.5 # ( 22.5kg)
45.5 # (20.6kg)
40.0 # (18.1kg)
Note: Specifications subject to change without notice or obligation