William Optics Flat4


William Optics 2" Flat 4.


APO Adjustable field flattener for 500-1000mm focal length refractors: ideal for Megrez 90, FLT98, FLT 110, 132

This revolutionary new WO AFR-IV Adjustable Flattener was made for 500-1000mm refractors.

Super-Transmission-Coated with 2-element optics, this unit is designed and produced by William Optics. The inner flattener lenses can be set at the optimum 66mm-86mm back focus distnace by a simple hand twist control. (Distance from flattener lens to film or CCD plane).

  • Designed to cover full-size DSLR cameras with clear lens aperture of 54 mm
  • STM coated with excellent doublet air spaced design
  • Produced entirely with the best Ohara optical glasses


We currently do not have physical stock of this product and will order it upon receipt of a  80% deposit.  An updated quote may be requested beforehand - see next bullet.

Price is based on the following:

       R10.30/$ mid-market exchange rate
       40% shipping fee
       Excludes local delivery

Final price will be based on the actual costs applicable.  The remainder is payable before or on collection/delivery to the customer.
Delivery is typical 2 to 3 weeks to our offices.

Please en-quire for final arrangement details.

Add to Cart:

  • Model: WO_P_FLAT4
  • Shipping Weight: 0.7kgs
  • 2 Units in Stock
  • Manufactured by: William Optics

This product was added to our catalog on Sunday 10 October, 2010.

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