Lunt Solar Systems Filters Ca-K module with 12mm blocking filter in star diagonal for 2" focuser (15952)
62292.67 Kč
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Calcium K (Ca-K) telescopes and filters are designed for observing the Sun at the 393.4 nm wavelength, which is produced by calcium and lies at the edge of the visible spectrum. This emission line reveals super granulation cells, which are most prominent in regions with strong magnetic fields, such as sunspots and other active solar areas. Studying both the Calcium K and Hydrogen-alpha lines gives astronomers valuable information about the structure and dynamics of solar activity.