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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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It is important to keep the trmplate straight and parallel to ensure that diffraction spikes will be bright and thin. This is what I’ve been waiting for Edge thickness must be a positive number. Seeing conditions will not significantly affect the diffraction spike pattern, which means the Spike-a is even useful for visual work. Sripe count must be a positive integer.

Unless you feel strongly about it, leave this uchecked. However, trying to do this with a DSLR is extremely difficult as the pentaprism viewfinder is designed for daytime use and even a ‘bright’ star appears dim in the viewfinder. How does it work? Scale to 72 DPI.

The pattern displayed in a Hartmann just gets slightly more in focus, which means the true focus may be off by a significant degree. Hilborn, Ontario Canada “Just used my Spike-a Mask last night and could not believe how effective it is.

Focal length mm Focal length must be a positive number. Some people believe that the center of the left-hand side should be a bar blockedand not a slot open.


When the middle diffraction spike is centered in the outer spikes, you’re in focus. Angled slot offset Sripe offset must be an integer.

Edge thickness mm Edge thickness must be a positive number. If you plan to open the generated SVG with Illustrator, check this box – bahinov you forget, you bahtonov always scale the drawing by 0. The Bahtinov Mask is a very elegant solution to one of the biggest problems that besets the deep sky astro-photographer – focus! Attaching templae mounting ring. Then I cut the mask out using scissors, while leaving 12 small rectangular sections around the circle. Copyright astro jargon. Click Here for a printable order form.

If you decide the mask needs to be 20mm larger than the clear aperture, enter 10mm. Complete cutouts in plastic. However, the unique design of the Bahtinov Mask produces a very bright image with a diffraction pattern forming a long cross comprised of two intersecting lines and a third line that moves across the centre of the cross as the telescope is adjusted in and out of focus.

Home Made Bahtinov Focusing Mask & Templates

bahtinkv Capturing an image tsmplate then looking at it on the camera’s built in screen is a step in the right direction but you can still be easily fooled by the view. The Bahtinov Mask invented by Pavel Bahtinov, a respected Russian astro-photographer, will work with both kinds of camera by producing a distinctive ‘diffraction pattern’ in a similar manner to the way a four vane secondary mirror spider vane on a Newtonian reflector produces a four pronged star and that of a three vaned spider vane produces a six pronged star.


Horizontal slot count must be a positive integer. The central spike bahtinof left or right relative to the diagonal “X” spikes according to focus position. Horizontal slot count Horizontal slot count must be a positive integer.

Then I cut a few strips of plastic, to fit these 12 cutouts 2. Extra Precision In recent years, software has been developed to allow sub-pixel accuracy when using a Bahtinov Mask. Each page has 1 inch overlap and markings which indicate how to connect each piece. It consists of a disk made of opaque material fitted over the telescope objective with slots cut out in a specific pattern devised by amateur astrophotographer Pavel Bahtinov.

The Bahtinov Mask

Aperture must be a postive number. Has no effect if the central obstruction diameter is 0. Angled slot count Sripe count must be a positive integer. A Better Focusing Mask Unlike a Hartmann Mask which provides no visual cues on the direction of travel trmplate for focusing, the Spike-a mask is a Bahtinov mask which mmask shows the direction of travel needed to achieve focus. Central obstruction diameter must be a non-negative number.

Mac 40D Shutter Count. In my case I had to print the mask on two pages. 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 Masi Tips “I highly recommend the Spike-a Bahtinov mask for all astrophotography systems that use electronic imaging systems.