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This filter has wavelength uniformity of +/- 0
Thread: Male/Female 'T' thread
Best Priced 40-60mm H-alpha Telescope
6D Mark II
Works on binoculars
Quantum Sodium D 0.4Å PE H Alpha This filter has wavelength uniformityDaystar is proud to offer Sodium Na D line (5895. 9) filtering systems for visual and photographic studies. Sodium filter assemblies are designed for sub angstrom observations with single cavity design. Sodium lines are very narrow, but very bright. A very narrow filter of < 0. 5 is necessary to properly isolate the line from the continuum. The resulting image depicts high detail in granulation, supergranulation and P modes. Sodium also shows