William Optics Bahtinov Mask for Dew Shield ~diameter 75mm to 110mm

£44.00

(1 Review)

✓ 2 year warranty

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About this product

Model: wo-bm-ds-gr45
Part Number: bm-ds-gr-45

New William Optics bahtinov focusing mask made of acrylic sheet which maximises light transmission for ease of use.

The new Optical acrylic sheet offers 92% of light transmission that gave you the highest and brightest diffraction Spikes for Focusing !

It’s approx 3 times brighter than a traditional metal mask.

Customer reviews

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WO Bhatinov Mask

Tuesday, 5 January 2021 | Andrew

Quite pleased with the mask. It definitely gives a nice, clear diffraction pattern that enables quick, and precise focussing. The silicon-sleeved, adjustable screws grip the lens, or scope very nicely, with no danger of slipping if adjusted correctly. The mask arrived very well packaged, and seems to be a very nice piece of kit. I can’t give it five stars though, as it is incredibly expensive for a sliver of PVC, no matter what grade of PVC it is.