Appendix A Technical Specifications
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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 |
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Optical Design | Refractor | Refractor | Refractor | Refractor | Newtonian | |
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 | Omni | Omni | Omni | Omni | Omni |
Tripod Legs | 1.75" Stainless | 1.75 Stainless | 1.75" Stainless | 1.75" Stainless | 1.75" Stainless | 1.75" Stainless |
| 3.2kg (7#) & | 3.2kg (7#) & | 3.2kg (7#) & | 3.2kg (7#) & | 3.2kg (7#) & | 3.2kg (7#) & |
Counterweights | 1.8kg (4#) | 1.8kg (4#) | 1.8kg (4#) | 1.8kg (4#) | 1.8kg (4#) | 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 | 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 |
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