Manufacturer: Farpoint USA
Product number: FP404B

EUR 45,79


incl. 19 % VAT (DE)  
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excl. 6.95 € shipping costs (DE)  
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  • Details..
  • Technical data..
  • In the box..
Bahtinov focusing masks allow ultra-precise focusing
You can see directly whether you are in focus or not. No guessing or interpreting difficult diffraction patterns necessary.

The mask fits to:
all telescopes with tube diameters of 8,5" to 10,5" (216 mm - 267 mm).
With the supplied screws, the mask can be adapted to your tube diameter easily.



And that´s how it works:




Left picture: the center line does not go through the middle of the cross - out of focus
Middle picture: the center line passes the middle of the cross directly - perfect focus<
Right picture: the center line does not go through the middle of the cross - out of focus

While turning the focus wheel, you can see directly how the center line moves through the cross section.
Type:Bahtinov mask
Version:general purpose (refractors, Newtonians)
Suitable for telescopes:8,5" to 10,5" (216 mm - 267 mm) tube diameter
Material:ABS
Bahtinov Mask with screws



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