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Ships within 48 hours · Estimated delivery Aug 7 - Aug 12
and weighs 3
The filter performs better with a narrower bandpass with the 4
Operation couldn't be simpler
and blocks all other parts of the spectrum in the UV and IR
Quantum Calcium II K 2Å PE Combo Quark and weighs 3Daystar 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
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