Appendix a technical specifications – Celestron XLT series User Manual
Page 49
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h
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l
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S
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p
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Omni
XLT
Series
21088 21090 31057 11084
Omni XLT 102
Omni XLT 120
Omni XLT 150
Omni XLT 127
O
segrain
ptical Design
Refractor Refractor Newtonian
Schmidt-
Cas
Aperture
102mm (4.0")
120mm (4.7") 150mm
(6.0") 127mm
(5.0")
Focal
Length
1000mm 1000mm 750mm 1250mm
Focal Ratio
f/10
f/8.3
f/5
f/10
O
ght XLT
Starbright XLT
Starbright XLT
ptical Coatings
Starbright XLT
Starbri
F
ope
6x30 6x30 6x30 6x30
indersc
Star Diagonal
1.25"
1.25"
n/a
1.25"
Eyepiece – (std) MC 50deg FOV
25mm (40x) 25mm
(40x) 25mm
(30x) 25mm
(50x)
Mount - Equatorial
Omni CG-4
Omni CG-4
Omni CG-4
Omni CG-4
T
ripod Legs
1.75" Stainless
1.75" Stainless 1.75"
Stainless 1.75"
Stainless
C
3.2kg (7#) &
3.2kg (7#) &
3.2kg (7#) &
3.2kg (7#)&
ounterweights
1.8kg (4#)
1.8kg (4#)
1.8kg (4#)
1.8kg(4#)
Highest Useful Magnification
240x 283x 360x 300x
Lowest Useful Magnification
15x 17x 21x 18x
L
ude
12.5 12.9 13.4 13.1
imiting
Stellar
Magnit
Resolution: Raleigh -arc seconds
1.36
1.19
0.92
1.1
Resolution: Dawest Limit
1.14
0.97
0.76
0.91
Light
Gathering
Power 212x 294x 459x 329x
Field of View - Angular w/25mm
ep
1.25° 1.25° 1.67° 1.0°
Field of View - Linear w/25mm ep
66 ft. @1000yds
66 ft. @1000yds
88 ft. @1000yds
53 ft. @1000yds
Optical Tube Length
39.5" (1003mm)
40.0" (1016mm)
26.5" (673mm)
11.0" (279mm)
Optical Tube Weight
9.5 # ( 4.3kg)
12.5 # ( 5.7kg)
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)
T
eight
12.5 # ( 5.7kg)
12.5 # (5.7kg)
12.5 # ( 5.7kg)
12.5 # ( 5.7kg)
ripod W
T
otal Weight
43.0 # ( 19.5kg)
46.0 # ( 20.9kg)
45.5 # (20.6kg)
40.0 # (18.1kg)
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