Quantum Calcium II K 2Å PE Combo Quark The Quark contains a custom

The Quark contains a custom Daystar Instruments 4

Quality Achromat Doublet 60mm refractor

Just insert Quark in your diagonal

Operation couldn't be simpler

These are great for viewing eclipses

Quantum Calcium II K 2Å PE Combo Quark The Quark contains a customDaystar 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