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M6 Mark II
8X Telecentric Barlow
The filter performs better with a narrower bandpass with the 4
Operation couldn't be simpler
Quality Achromat Doublet 60mm refractor
Quantum Calcium II K 2Å PE Combo Quark M6 Mark IIDaystar Calcium K line Quantum Filters 2. 0 suitable for academic purposes. Ideal application: CCD photography or indoor visual viewing environment. Traditionally, university research has employed the Calcium K line for studies of Calcium on the Sun. These studies have been instrumental in determining depth of the solar atmosphere. Calcium offers TWO strong absorption lines at 393. 3nm and at 396. 9nm, known as the K and H lines. Researchers have
