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- William Optics FLT-98
William Optics FLT-98
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Product Description
Fluorostar 98mm f/6.3 apochromatic. Fluostar series (FLT) represents William Optics' top of the line apochromatic designed for astrophotography. FLT-98 is equipped with the beefy 3.5" RotoLock focuser to carry heavy imaging train which allows you to exploit the potential of this fluorite triplet even further.
Includes
- FLT-98
- 3.5" RotoLock Focuser
- 2 mounting rings
- Soft padded carrying case
Highlights
- 98mm f/6.3 top quality triplet air-spaced objectives aprochromatics
- Includes 1 FPL-53 fluorite element
- Designed by A. Strakhov
- Precision optics with STM coating
- 3.5" RotoLock focuser suitable for heavy camera
- Very sharp image with great colour correction
- Designed for astrophotography
Specifications
| Optical system | Air-spaced triplets with 1 FPL-53 fluorite element |
| Aperture | 98 mm |
| Focal length | 618 mm |
| Focal ratio | f/6.3 |
| Image circle |
50 mm |
| Back focus | 66-86 mm with Adjustable Flattener Reducer IV |
| Resolution | 1.16 arcseconds |
| Limiting magnitude | 14.5 |
| Light gathering power | 196x |
| OTA length |
600 mm (fully extended) |
| Weight | 5.2 kg |
Free shipping applies
United States, S. Korea, Japan, Malaysia, Philippines, Singapore, Hong Kong, Taiwan, Indonesia, Australia, New Zealand, Germany, France, Switzerland, Sweden, Denmark, Netherlands, United Kingdoms and others.
Via FedEx International Economy. Arriving in 1-5 working days.
Warranty
7 days no question asked return if due to material or worksmanship defects
2 years from William Optics
Cyclops Optics Ltd. is an authorised dealer of William Optics' products.
Quality Control
| Scratches | Width no more than | 0.025 mm |
| Total length no more than | 1/4 of total lens diameter. No more than 3 individual scratches | |
| Dots or spots | Diameter, no more than | 0.4 mm |
| Quantity no more than | 3 | |
| Accumulation of defects | Limited area | 0.8 mm2 |
| Total area of scratches and points no more than | 5.8 mm2 |
