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James_826
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Reged: 02/09/12
Loc: Beggs, Ok
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DIY Bahtinov Focusing Masks with lasers.
#5567383 - 12/12/12 11:33 AM
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Yesterday I had some fun at my local Fablab making my own Bahtinov Focusing Masks with a laser cutter. I made one for each of my scopes. I used this website to make the basic models, http://astrojargon.net/MaskGenerator.aspx. I then imported the files into Inkskape to add the labels and corner, http://inkscape.org/. Then I was able to cut them out at FabLab in Tulsa, http://www.fablabtulsa.com/. I still need to add rubber stoppers to their backs so they can hang on the scopes and I also need to polyurethane them so the last a little longer. The were made from a sheet of 1/8 tempered hardboard.
The laser cutter doing its job:
This is the machine doing the cutting:
One done, the other is cutting:
The final product completed and back home.
I can upload the pdf or svg files if anyone likes, but you really should use the website above to custom make your own so the specs are correct.
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Mary B
Vendor - Echo Astronomy and Electronics
Reged: 05/21/10
Loc: Minnesota
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Re: DIY Bahtinov Focusing Masks with lasers.
[Re: James_826]
#5568118 - 12/12/12 07:16 PM
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You can increase the number of lines on a mask for full coverage in the online program. It is down in the bottom half.
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James_826
member
Reged: 02/09/12
Loc: Beggs, Ok
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Re: DIY Bahtinov Focusing Masks with lasers.
[Re: Mary B]
#5568315 - 12/12/12 09:28 PM
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Quote:
You can increase the number of lines on a mask for full coverage in the online program. It is down in the bottom half.
I did not catch that, thank you.
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rogercelliott
sage
Reged: 09/19/08
Loc: Redding, CA
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Re: DIY Bahtinov Focusing Masks with lasers.
[Re: James_826]
#5569176 - 12/13/12 12:34 PM
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How much did you pay for this service?
Cheers
Roger
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Mary B
Vendor - Echo Astronomy and Electronics
Reged: 05/21/10
Loc: Minnesota
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Re: DIY Bahtinov Focusing Masks with lasers.
[Re: rogercelliott]
#5569915 - 12/13/12 08:36 PM
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I use black opaque acrylic sheet, no painting needed. Only downfall is they are fragile and will shatter if dropped.
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