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Please note: Green Witch North (Birstall) will be closed from 12pm-5pm Friday 18th May due to stock take.

Green Witch > Astronomy > Accessories > Accessories By Make > William Optics Accessories > William Optics Field Flatteners
Field Flattener for FLT TelescopesField Flattener for FLT Telescopes Ref: WO-P-FLAT68
  • WILLIAM OPTICS

This high-quality flattener has been engineered and CNC machined for usage with FLT-110 & FLT-132 APO refractors. Designed by leading designer Thomas Back for the FLT line, it will yield amazing results! It's a must-have item for avid astro-imagers with larger format sensors.


Price: £288.00 (Including VAT at 20%)



Field Flattener for Megrez 88 TelescopesField Flattener for Megrez 88 Telescopes Ref: WO-P-FLAT88
  • WILLIAM OPTICS

Field Flattener 88, especially recommended for Megrez 88.

This 2" lens system provides a flat field for 35mm photography with f/5.5-6.0 refractors. You will see bright & sharp stars all the way across the field.

  • Fully multi-coated/ doublet design (Ohara glass )
  • Suitable for f/5.5~ f/6.0 refractors (Megrez88)
  • T-ring thread for any 35mm camera (requires T-ring to match camera body)
  • Anodized finish
  • internal surface is anti-reflection coated

Price: £152.35 (Including VAT at 20%)



Field Flattener for 500-1000mm Focal-length TelescopesField Flattener for 500-1000mm Focal-length Telescopes Ref: WO-P-FLAT4
  • WILLIAM OPTICS

This revolutionary new WO AFR-IV Adjustable Flattener was made for 500-1000mm refractors. Ideal for Megrez 90, FLT98, FLT110 and FLT132.

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 distance 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

Price: £228.52 (Including VAT at 20%)



Green Witch > Astronomy > Accessories > Accessories By Make > William Optics Accessories > William Optics Field Flatteners

Please note: Green Witch North (Birstall) will be closed from 12pm-5pm Friday 18th May due to stock take.