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prioritizing surface contrast at the expense of a dimmer image as compared to the 2
Wavelength: Sodium D (5890
Our telecentric optical system offers a full disk field of view visually
5mm) for 45mm or larger outside diameter tubes
making it ideal for solar observation with Daystar Filters
Daystar CALCIUM QUARK Filter solar astronomy prioritizing surface contrast at theDaystar Quark Calcium H Model Filter is the first Calcium Eyepiece for F 7 or longer focal ratio refractors. This new, All In One design marries high quality components of adapters, snouts, and Daystar Calcium H filter into one simple assembly. Through design efficiency and optimization, now users can enjoy the known high quality optics of Daystar at an affordable price. Why Calcium H line? Many astronomers forget that the Calcium H line and K line
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