Quantum Sodium D 0.4Å PE Combo Quark 25” UV/IR Cut Filter lets

25” UV/IR Cut Filter lets the full range of sensitivity of the human eye pass

Daystar Quantum Hydrogen Alpha

Accepts GM1D1 1

and durable hard case

Quantum Sodium D 0.4Å PE Combo Quark 25” UV/IR Cut Filter letsDaystar 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