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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Open center A “doughnut” is cut out of the central obstruction to fit over your secondary holder when checked. The angle from the horizontal of the angled slots. Points for a mounting ring. I used the small mask to achieve focus, and it was very easy to use and produced great results.


This generator makes generating masks significantly easier – simply enter templahe parameter values specific to your telescope on the next page, press the Generate!

You should follow the templqte written on the glue tube, which usually tell you to spread the glue on both surfaces and then let it dry for minutes before attaching them together:. If you have questions, comments, issues, suggestions, or if you’d like to be notified when the generator is updated, mas, an e-mail to david at astrojargon dot net.

I have made several of these but Figure 4. Once you have downloaded this software, a simple demonstration of its capabilities would be to try it out on each of the three test images in Figure 1. Tough one to describe. The width of the structural bars – the vertical bar and the horizontal bar separating the upper and lower quadrants. The value calculated for the slot width, given the focal length and the Bahtinov factor. Another tip is to make the inner diameter of the mask slightly larger than required mm and add a thick soft tape inside – this way the mask will be held much firmer.



Bahtinov Focusing Mask

A Masterfully Executed Bahtinov Mask reprinted with permission. The Bahtinov Mask is a very elegant solution to one of the biggest problems that besets the deep sky astro-photographer – focus! The Spike-a attaches securely to your scope using nylon screws to ensure the finish of your telescope is protected. Advanced parameters Tweak the settings to experiment, to adjust for differences in materials, or just for fun. I’ve made the mask for my 8″ reflector using materials commonly avaliable in an office supply store.

This value is similar to that of FWHM but is considered to be more reliable especially in conditions of poor seeing. The latest DSLR cameras with ‘liveview’ functionality that displays a live view of the light falling on the sensor can help somewhat but this is still not an ideal solution. HFD is the pixel diameter of a star in which half the energy of the star is contained.

Sripe offset must be an integer. 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.

Sketch of The Omega Centauri. Horizontal slot count Horizontal slot count must be a positive integer. Bahfinov focal length of your scope, in mm.


For refractors, this should be 0. First step was to print the mask – you can use the provided templatesor use the original bahtinov mask generatorand then print it any modern browser can open the generated.

Focal length mm Focal length must be a positive number. Then the annoying task – cutting the plastic. It is common practice to focus your camera DSLR or astro-CCD on a bright star as this star and the object you want to image will both be at infinity so getting the star in focus will ensure that the deep sky object will also be in focus.

Home Made Bahtinov Focusing Mask & Templates

When precize focus is achieved – the pattern becomes symmetrical. I glued the strips to the bent sections using a strong contact glue.

If you decide the mask needs to be 20mm larger than the clear aperture, enter 10mm. These two methods seek to provide an empirical method of achieving focus but because of changes in the ‘seeing’ between shots, they are not always easy to use.

With a Spike-a Bahtinov Mask, you can. Has templare effect if the central obstruction diameter is 0. Hear what our customers are saying “Just used a Spike-a mask for the first time Angled slot count Sripe count must be a positive integer.

In my case I had to print the mask on two pages. Orion Telescopes Copyright astro jargon.