Manufacturer: William Optics
Product number: P-FLAT6AIII

EUR 399,00


incl. 19 % VAT (DE)  
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  • On stock




rating: 5.0 of 5
  • Details..
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  • FAQ..
William Optics Adjustable Flattener and 0.8x Reducer - M63 Telescope Connection
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. WO Flat 6AIII 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 triplet APO design
Produced entirely with the best Ohara optical glasses


Features
Reducing factor 0.8x
Adjustable design, for perfect back focus it can be used with other models of refractor
48 mm 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 48 mm T-ring for your camera


Suitable for
GT71, GT81, Z103, Z81


Adjust Distance

GT71: 9.1 mm
GT81: 7.1 mm
Z81: 5.2 mm
Z103: 2.5 mm
Type:Reducer/Flattener
Focal length change:0.8x
Structure:Triplet APO design
Coating:Fully multi-coated
Corrected image circle:43.1 mm to 44.4 mm, sufficient for full-frame format
Working distance:57.5 mm to 64.1 mm, depending on telescope
Telescope side connection:M63x1 external thread
Camera side connection:M48x0.75 external thread
Material body:Anodized aluminum
Flattener/Reducer
Two caps


Question:
How do you have to measure the working distance?

Answer from Teleskop-Service:
The working distance is measured from the beginning of the connection thread on the housing of the corrector (see example picture):




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Reviews

Written by Bert Wilde
on 2023-07-05

"High quality, solid product, well built and great results across the overall FOV"

Written by Steffen Wetzel
on 2023-01-25

"Ich nutze diesen Reducer wie vorgesehen mit dem *** . Die Brennweite wird verkürzt, das Bildfeld für flächige Objekte (z.B. M31) ohne Beanstandungen für die Astrofotografie geweitet. Auch visuell ist diese Kombination sehr gut."

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