Celestron Schmidt-Cassegrain SC- & EdgeHD Optical Tube Assemblies
Product.Nr.:
Master-Celestron-OTA
Manufacturer: Celestron
-
Nicht auf Lager
products condition NewCondition
Seen cheaper?product description
Celestron’s diverse selection of optical tubes meet all of the same exacting standards of our distinguished line of telescopes, but are available individually, and designed to be compatible with many of our most popular mounts.
| Optical Tube Assembly | C5 | C6 | C8 | C9¼ | C11 | C14 | EdgeHD 800 | EdgeHD 925 | EdgeHD 1100 | EdgeHD 1400 |
| Optical Design | Schmidt-Cassegrain (SC) | aplanatic | ||||||||
| Aperture - in mm - Inch (") |
127 (5") |
150 (5,9") |
203,2 (8") |
234,95 (9,25") |
279,4 (11") |
355,6 (14") |
203,2 (8") |
234,95 (9,25") |
279,4 (11") |
355,6 (14") |
| Focal Length in mm | 1250 | 1500 | 2032 | 2350 | 2800 | 3910 | 2125 | 2321 | 2788 | 3857 |
| Focal Ratio | f/9,84 | f/10 | f/11 | f/10 | f/11 | |||||
| Optical Coating | StarBright | StarBright XLT | ||||||||
|
Light Gathering Power |
329x | 459x | 843x | 1127x | 1593x | 2586x | 843x | 1127x | 1593x | 2586x |
| Limiting Stellar Magnitude | 13 | 13,4 | 14 | 14,4 | 14,7 | 15,3 | 14 | 14,4 | 14,7 | 15,3 |
| Resolution in arc seconds (") - Rayleigh - Dawes |
1,1 |
0,93 |
0,69 |
0,59 |
0,50 |
0,39 |
0,69 |
0,59 |
0,50 |
0,39 |
| Secondary Mirror Obstruction - by Diameter - by Area |
44mm |
56mm |
69mm 34% 11% |
85mm 36% 13% |
95mm 34% 12% |
114mm 32% 10% |
69mm 34% 11% |
85mm 36% 13% |
95mm 34% 12% |
114mm 32% 10% |
| Highest Useful Magnification ca. | 300x | 354x | 480x | 555x | 660x | 841x | 480x | 555x | 660x | 841x |
| Lowest Useful Magnification | 18x | 21x | 29x | 34x | 40x | 51x | 29x | 34x | 40x | 51x |
| FASTAR compatible | - | yes | ||||||||
| HYPERSTAR compatible | - | yes (f/2) | yes (f/2) | yes (f/1,9) | yes (f/2) | yes (f/2,3) | yes (f/2) | yes (f/1,9) | ||
| Anschlußgewinde in Zoll | 2" | 2" | 2" | 3.3" | 2" | 3.3" | ||||
| Optical Tube | Aluminium | |||||||||
| Optical Tube Length in cm | 33 | 69 | 43 | 56 | 61 | 79 | 43 | 56 | 61 | 79 |
| Optical Tube Weight in kg | 2,72 | 4,5 | 5,5 | 9 | 12,3 | 20,4 | 6,4 | 9,5 | 12,7 | 20,9 |
The specifications are subject to change without notice.
OTA = Optical Tube Assembly
HD = EdgeHD (High Definition)
FASTAR = old name (f/2 - compatible)
HyperStar = new name (f/1.9-f/2 - compatible)
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