90FL model was keeping the top rank among high-end BORG telescope line-up until 107FL model was released. The reason for that is in unexceptional optical resolution achieved by adopting fluorite glass element from Canon Optron in the optical design of the objective lens while featuring super tele 500mm focal length and aperture f/5.6. Great gear for watching celestial bodies and shooting wild birds as well. In spite of the large front element diameter of 100mm the model is extremely compact and lightweight thanks to carbon fiber made barrel that makes it easy to carry on the location. Recommended for starry sky observation, the Nebula, the star cluster, and the planet. It is also possible to convert telescope to tele lens by removing the prism and the eyepiece and attaching the camera mount.
Highlight features
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Equipped with fluorite glass element from Canon Optron.
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Objective lens optical design: 2 elements in 2 groups, fluorite, apochromatic, multicoated.
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20mm and 9mm eyepieces are included.
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Compatible with 80Ø barrel system.
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Rack & pinion focusing system.
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Equipped with ground type prism for on-ground and astro observation and tripod collar.
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Lightweight construction of only 3.0 kg, including a set of accessories. Easy to carry.
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Objective lenses and major parts are made in Japan.
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CR stands for Carbon and rack&pinion focusing system.
Specifications
| Model Name | BORG 90FL Telescope SET CR |
|---|---|
| Product Code | 6390 |
| Focal Length, mm | 500 |
| Aperture | f/5.6 |
| Min. Length, mm | 420 |
| Weight, g | 2900 |
| Filter Size, mm | 82 |