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Astrophotography > Optical accessories > Flatteners, Correctors, Reducers > William Optics > William Optics Adjustable Flattener Reducer Flat6A II
Product no.: 58563

Adjustable Flattener Reducer Flat6A II

$ 269.00 incl. VAT, plus shipping costs
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Product description

This very elegant 2" reducer/field flattener has been designed to optimize the flat-field imaging performance of William Optics F/6 to F7.5 ratio refactors. It will provide good illumination and flat field across 97% of full frame sized sensors.

Full frame size

  • Designed with nearly Full frame chip-size DSLR cameras in mind.
  • FMC tripllet APO design.
  • Produced entirely with the best Ohara optical glasses.

Amazing

  • Reducing factor 0.8X
  • Adjustable design, for perfect back focus it can be used with other models of refractor
  • 48mm filter ready

Superb Finish

  • William Optics polished anodized finish.
  • All internal surfaces threaded and blackened to prevent reflections.

Easy to Use: Will accept any standard 48mm T-ring for your camera.

Suitable for: GT71, GT81, Z81, Z103, Z126 (GT = Gran Turismo, Z = ZenithStar)

You have to adjust the flattener to your telescope:

  • GT71: 9.1mm
  • GT81: 7.1mm
  • Z81: 5.2mm
  • Z103: 2.5mm

The pictures on the right shows how this is done: Just turn the flattener until the scale shows the correct distance, than lock it with the locking ring.

How to install the flattener? The flattener comes with an M63 thread. You just have to unscrew the 2"-Adapter out of the tube and screw the flattener inside.

Specifications

Capacity


Focal length reduction
0,8
Filter thread
yes (M48)
Connector (at camera end)
M48
Connection (to the telescope)
M74

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Camera adaptor

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*All prices include VAT plus shipping costs.

William Optics Adjustable Flattener Reducer Flat6A II
Adjust the distance.
William Optics Adjustable Flattener Reducer Flat6A II
Lock the distance with the screw.
William Optics Adjustable Flattener Reducer Flat6A II
If the tube has an M63 thread, you can screw in the flattener directly.
William Optics Adjustable Flattener Reducer Flat6A II
Usage of the optional WD-DIG2A Adapter

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