William Optics

Used William Optics Fluorostar 91


  • Sale
  • $1,698.00
  • Regular price $1,998.00

Limit 1 Per Customer
Purchase for resale not allowed.

See It In Person - On Display In Our Showroom!

Free Ground Shipping Available (CONUS Only)

Not Returnable Please note that used items are not returnable.

Condition: Very lightly used. This is the gray model.  This comes from a customer who always takes perfect care of his gear, and it shows.  This is in like new condition with not a mark on it.  Save $300 and get yourself a bargain!   

This comes in its original box and case so it can be shipped. 


We recommend the 0.8x Flattener/Reducer Special edition for FLT91 if used for AP.

  • FLT91 f/5.9 super APO (triplet)
  • 540mm Focal Length
  • With optional x0.8 reducer, F/4.7 (not included)
  • 45mm image circle
  • Smooth dual-speed 3.3” R&P focuser
  • Minimum Strehl ratio 0.95+
  • 3.3” Camera Rotator included
  • Airline carry size case, two Rings, new wide vixens style dovetail , carry saddle bar and rotolock all included.
  • OTA weight: 4.165 Kg
  • Total Scope with rings and dovetail Weight around 5.6kg
  • Length:45cm( retracted)