Description
The Bahtinov mask is a device used to focus small astronomical telescopes accurately. It was invented by Russian amateur astrophotographer Pavel Bahtinov in 2008. Accurate focusing oftelescopesandastrographsis particularly of concern to those involved inastrophotography. The telescope is pointed at a brightstar, and a mask is placed in front of the telescope'sobjective(e.g. primary mirror). The Bahtinov mask works by diffracting light around a central point, and by adjusting the focus of the telescope, the user can center the diffraction spike around the star.
Make your focusing for astrophotography an easy and magic task . About Bahtinov mask TheBahtinov maskis a device used to focus small astronomical telescopes accurately. It was invented by Russian amateur astrophotographerPavel Bahtinovin 2008. Accurate focusing oftelescopesandastrographsis particularly of concern to those involved inastrophotography. The telescope is pointed at a brightstar, and a mask is placed in front of the telescope'sobjective(e.g. primary mirror).
How does it work? Set up your telescope and imaging equipment as normal. Then simply locate a bright star (maybe Spica?) with your telescope, attach the Bahtinov mask to your telescope and watch the diffraction spike pattern around the star as you adjust the focus. When the middle diffraction spike is centered in the outer spikes, you're in focus. Very little focusing travel is required to move the inner diffraction spike, which means the focus is extremely accurate.
Program type> Suitable for telescopes Dew Shield or Front Outer Diameter Front From 115-165mm (4.5in-6.5in) - For 127mm Celestron or Skywatcher Maksutovs, Meade 127 ED APO, Celestron 5 SE Etc.
Package Include: Bahtinov Mask
3 X Brass bolt
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