Bahtinov focus masks are available for virtually every telescope made but the main manufacturers
 
Meade, Celestron, Sky-Watcher, Orion, William Optics, Takahashi, TEC, Telescope Service,
 
Revelation, Vixen, Altair Astro, Ikharus
and ALL clones 
The unique design prevents the mask from rolling away

I am very happy to make you a bespoke mask if you can't find one for your telescope

Out Of Focus                                   Nearly There                                   Perfect Focus
outoffocus   nearlythere   PERFECT  
It will take less than 1 minute to achieve perfect focus with your new mask and will mean you spend more time imaging photons rather than focusing them
 

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Above is a f10 mask suitable for Schmidt Cassegrains

 above my own setup consisting of Celestron C925 and William Optics ED102 Megrez

3mm thick Matt black Toughened Acrylic so no reflective light.

Unlike ones made of ordinary Acrylic or Perspex these ones will resist cracking and breaking during normal use.

However they are NOT unbreakable so treat them with the same care as you do with your lenses and camera equipment.

Light weight so you wont upset the balance on your scope.

Precision laser cut.

M6 black plastic bolts to hang the mask over the front of your scope,

these are removable for easy storage of your mask after focusing.

I mark the extended corner with reflective tape this is so you can find it again in the dark.

Also like most people I have from time to time forgotten to remove the mask before imaging,

the bright reflective corner makes it stand out.

Unlike a Hartmann Mask which provides no visual cues on the direction of travel needed for focusing.

A Bahtinov mask  clearly shows the direction of travel needed to achieve focus.

Also, a Hartmann mask doesn't provide the focus precision of a Bahtinov mask.

The pattern displayed in a Hartmann just gets slightly more in focus, which means the true focus may be off by a significant degree.

The Star Sharp Focus Mask

shows you exactly where the perfect focus point is every time, regardless of seeing conditions.

This unique design also allows more light gathering than a Hartmann mask allowing you to focus on a much dimmer star.
 

Special sizes are also available, just let us know

focal length

aperture of lens or mirror

the outside diameter of your tube
 

ALL MASKS SHIPPED IN "PIZZA" BOXES TO INSURE THEIR SAFE ARRIVAL, ALSO THESE BOXES ARE EXCELLENT FOR STORING YOUR MASK IN WHEN NOT BEING USED.