William Optics FLT98 Triplet APO Telescope - No DDG - Discontinued

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William Optics FLT98 Triplet APO Telescope - No DDG - Discontinued

William Optics FLT-98 Telescope

The FLT-98 refractor is a portable, high quality, versatile APO telescope designed for individuals who want a very high quality instrument in a relatively compact package. The William Optics 98mm f/6.3 telescope features an air-spaced top-quality triplet objective that includes one FPL53 fluorite element, designed by A. Strakhov, a leading optical designer in Russia. This scope is extremely sharp and has great color correction. It is ideal for astrophotography.

William Optics FLT-98 Telescope Highlights...

  • Stainless steel reinforcement inserts on both sides and on the back to allow heavy loading without problems.
  • The optical tube assembly of the FLT-98 is CNC machined and powder-coated white with gold highlights. It has a retractable dew shield so that the tube length can be shortened for travel.
  • Extra-smooth, dual-speed, 360??? rotatable 3.5 " Linear focuser: a treat to use during astrophotography. No more image shift!
  • The 3.5" linear focuser has a graduated scale for precise camera alignment.
  • The focuser comes with two locking screws and the oversized aluminum knobs make it easy to adjust, even with gloves on.
  • The FLT-98 optics comes in a highly precise CNC-machined lens cell.
  • Solid CNC-machined mounting rings included.
  • Stow away your telescope in the practical and portable soft case.
  • This scope sports an air-spaced triplet lens with STM coatings. It is extremely sharp and has great color correction..


Aperture99 mm (3.9")
Case IncludedYes
Dew Shield IncludedYes
Exterior ColorGloss White
Focal Ratiof/6.3
Free ShippingYes
Limiting Stellar Magnitude12.4
ManufacturerWilliam Optics
Mount Type OTA Only
Optical Design Apochromatic
OTA Length20.2 inches fully retracted & 23.62 inches fully extended
Telescope SeriesWilliam Optics FLT
Warranty2 Year Warranty


Ask a Question
  • Does this not come with the Polar finder scope?

    Hello John, Thank you for your question. This item does not come with the polar finderscope. One is available however. It is the Celestron Polar Finder for Advanced Series CG-5 Mount. http://www.optcorp.com/celestron-polar-finder-for-advanced-series-cg-

  • Does the Televue TRF-2008 0.8X work with this telescope?

    Hello Rodrigo, Thank you for your question. The William Optics FLT98 has a focal lenght of 618mm & while the TRF-2008 states that this is for telescopes with focal lengths of 400 to 600mm, this will work.