Lunt Solar Systems Ca-K module with 2", 6mm blocking filter in extension tube for 2" focuser (15917)
109193.12 ₽
Tax included
Calcium K (Ca-K) Telescopes and Filters are designed for observing the Sun at a wavelength of 393.4 nm. This specific emission line, produced by calcium, is found just at the edge of the visible spectrum in a solar layer that is slightly lower and cooler than the one observed in hydrogen-alpha light. Observing the Ca-K line reveals super granulation cells, which appear brightest and strongest in regions with high magnetic fields, such as sunspots and active solar regions.