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William Optics 2" 0.8x Adjustable Reducer / Field Flattener 4

4.5 (2 Reviews) Read Reviews Write Review
Brand William Optics
Part Number P-FLAT4
Availability available

Product Info

Manufacturer Description

This revolutionary new WO AFR-IV Adjustable Flattener / 0.8x Reducer was made for refractors with a focal length of 500-1000mm, including the William Optics FLT98, FLT110, and FLT132 refractors.

Super-Transmission-Coated with 2-element, this unit was designed and produced by William Optics. The inner flattener lenses can be set at the optimum 66mm-86mm back focus dsitance by a simple hand twist (Distance from flattener lens to film or CCD plane). This accessory is a must-have for refractor astrophotography.

Lens
Designed to cover full size DSLR cameras with clear lens aperture of 50 mm
STM coated with excellent doublet air spaced design.
Produced entirely with the best Ohara optical glasses.

Amazing
It will flatten the field amazingly well and finally let you image round stars!
This unique flattener works with WO's or other 500-1000mm focal length refractors.

Superb Finish
Superb William Optics anodized finish.
All internal surfaces threaded and blackened for no reflections.

Easy to Use
Rotating T-ring thread for any 35mm camera. The T-ring adapter is provided with a lock screw and extra lock retaining screws.
Will accept any standard T-ring for your camera.
Inserts directly into 2" focuser.

Suitable for
FLT98, FLT110, FLT132 and many others.

Specifications:
- High-quality FMC
- Lens-to-chip distance : 66-86mm
- Power : 0.75x ~ 0.8x
- Rotating T-ring adapter
- Clear Aperture : 50mm
- L 84mm : W 77mm : H 123mm
- Weight : 540 g

Reviews

4.5 (Based on 2 Reviews) 100% of reviewers recommended this product.
Rating Distribution
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    1. Guest

      Skill Level
      Unknown
      Time with Product
      Unknown
      User Notes:
      Review by Bob of Las Cruces, NM.
      1427500800
      Mar 27, 2015

      4.0 Fairly Happy

      Pros:

      Strong Construction

      Cons:

      Difficult To Focus

      Comments:

      I have had difficulty getting round stars out to the edge of my Atik 383l camera.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    2. Guest

      Skill Level
      Unknown
      Time with Product
      Unknown
      User Notes:
      Review by Dobsonion of Saline, MI.
      1380499200
      Sep 29, 2013

      5.0 Excellent Innovative FF

      Pros:

      Tack Sharp At Corners,Adjustable,High Optical Quality

      Cons:

      Drawing Not Accurate,Tought To Know Setting

      Comments:

      Fantastic to have adjustability, just would like to have an easier way to know what setting is optimal. But I did some testing and determined the best setting.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

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