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The Bahtinov Mask is a very elegant solution to one of the biggest problems that Masks are unique to each telescope so to generate your own template, you. Make Your Own Bahtinov Focusing Mask: A Bahtinov Mask will help focus your telescope or camera lens on Step 4: Cut a Mask Template on the Vinyl Cutter. High Quality Aluminum Bahtinov mask. The Bahtinov mask achieves perfect focus in seconds. The Bahtinov Mask was invented by Pavel Bahtinov from Russia. Click Here for a printable order form. Note that orders will be processed by.

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For refractors, this should be 0.

Home Made Bahtinov Focusing Mask & Templates

If non-zero, this shadows the central of your scope. The most elegant ways of building the mask are laser vahtinov, CNC or even 3D printing.

How does it work? You should follow the instructions written on the glue tube, which bahtinoov tell you to spread the glue on both surfaces and then let it dry for minutes before attaching them together:. Scale to 72 DPI. What will I see in a Telescope. The width of the structural bars – the vertical bar and the horizontal bar separating the upper and lower quadrants.

Capturing an image and then looking at it on the camera’s built in screen is a step templats the right direction but you can still be easily fooled by the view. In a similar way – a daylight solar filter can be made, by glueing a sheet of ” Astrosolar ” film or a similar product between two circles of plastic. You shouldn’t need to tweak this unless your slots are too narrow for cutting, in which case, divide the factor by 3. By setting to a negative value, they start “lower,” the net effect of which is to fit more cutouts on the mask – experiment!


Orion Telescopes Copyright astro jargon. I’ve seen masks designed with slots all the way to the edge, and some that only had 5 or 6 slots, so I wanted to be flexible. This generator makes generating masks significantly easier – simply enter some parameter values specific to your telescope on the next page, press the Generate! I used the small mask to achieve focus, and it was very easy to use and produced great results.

Extremely accurate focusing Visual feedback allows almost instant focusing Save money over competing focusing solutions Money back guarantee Works with all imagers High quality materials Read John Wunderlin’s Bahtinov Mask Tips “I highly recommend the Spike-a Bahtinov mask for all astrophotography systems that use electronic imaging systems. Basic tempplate Enter these three values, press Generate! Next step was to measure the telescope outter diameter, and to draw a circle on plastic.

Bahtinov factor Bahtinov factor must be a positive integer.

Horizontal slot count Horizontal slot count must be a positive templatte. Extra Precision In recent years, software has been developed to allow sub-pixel accuracy when using a Bahtinov Mask. Bahtinov mask is highly superior hemplate the Hartmann focusing mask, its predecessor, however it is more complicated to make.

The pattern displayed in a Hartmann just gets slightly more in focus, which means the true focus may be off by a significant degree. Pavel Bahtinov deserves a medal Angle must be a non-negative number between 0 and First step was to print the mask – you can use the provided templatesor use the original temolate mask generatorand then print it any modern browser can open the generated.

Slot width override must be a positive number. Hilborn, Ontario Canada “Just used my Spike-a Mask last night and could not believe how effective it is.

Ideally, should be between – You should use Adobe PDF or a similar software for printing. The central spike moves left or right relative to the diagonal “X” spikes according tempkate focus position. The extra distance the mask extends beyond the clear aperture. Central obstruction diameter mm Central obstruction diameter must be a non-negative number.


During the focusing procedure the mask is placed in front of telescope’s aperture and then the telescope should be pointed to a bright star.

Edge thickness mm Edge thickness must be a positive number. Bahtinov mask produces 3 diffraction spikes: In my opinion this method is even superior to manually focusing while reading FWHM value. Then simply locate a bright bahhinov maybe Spica? Some people believe that the center of the left-hand side should be a bar blocked mzsk, and not a slot open.

Horizontal slot count must be a positive integer. Calculated slot width mm 7.

Bahtinov Focusing Mask Generator Overview A Bahtinov mask is a focusing aid for astronomy in general, and astrophotography in particular. Angle degrees Angle must be a non-negative number between 0 and While using the browser to preview the SVG is useful in understanding the effect of changing parameters, I no longer recommend printing these directly from the browser.

astrojargon – Bahtinov Focusing Mask Generator: Version

HFD is the pixel diameter of a star in which half the energy of the star is contained. If you have questions, comments, issues, suggestions, or if you’d like to be notified when the generator is updated, shoot an e-mail to david at astrojargon dot net.

This is the same method I used to build an aperture solar filter bahhtinov well.

If you plan to open the generated SVG with Illustrator, check this box – if you forget, you can always scale the drawing by 0.