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The Celestron XLT optical quality has always been considered one of the best on the market. The correction to the diffraction limit and the special Starbright XLT coating, make these optics ideal for various use. Suitable for observation and photography, from planetary to deep-sky, it has many optional accessories to easily connect any CCD or DSLR camera.
Celestron has always had a lot of care on the choice of materials and coatings used in their optics. Precisely for this reason, the XLT have always been the best-selling Cassegrain in the world, their versatility has met the needs of many users in many fields of use. This optical scheme has been realized with spherical mirrors, on the optical path there isn't any other lenses, except the front corrector plate. Despite its compact size and light weight, the focal length is long, ideal for high resolution imaging. The images are very sharp and contrasty, the Starbright coatings ensures an optimum brightness even with faint objects.
It's the ideal telescope for planetary imaging even in high resolution. Thanks to the optional focal reducer, its focal length can be reduced to f/6.3 making it very good also for deep-sky astrophotography. This optic it's also Fastar compatible, which allows the user to further reduce the focal length to f / 2 (for photographic use only), so you can take pictures with very short exposure times, and in some cases autoguiding is not required. The field is completely flat and well illuminated from the center of the mirror up to the edges, even the stars appear geometrically and chromatically corrected thanks especially to corrector plate.
- Celestron C9,25-XLT optical tube
- Eyepiece Plossl 25mm 94x (31,8mm barrel)
- 31,8mm visual back
- 90° 31,8mm mirror diagonal
- Finderscope 6x30 with support
- Dovetail plate Losmandy type
|Optics||Primario e secondario sferici, con lastra correttrice|
|Focal Length (mm)||2350mm|
|Field flattener/corrector||Not included (optional)|
|Focuser||Interno (spostamento del primario)|