Daystar Quark Calcium Filter

Daystar Instruments CALCIUM QUARK Filter CALCIUM H MODEL for F/7 or Longer Focal Ratio Refractors This 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. For use on F/7 or longer focal ratio refractors, the user needn't worry about configurations. Just insert in your diagonal, add an eyepiece and view. Short focal ratio refractors will need a 2x or 2.5x Powermate to get the best performance. Exact filter bandpass will vary based on final telescope application. No specific FWHM bandpass is designated, but it will be around 5Å. The fully optimized design eliminates the need for any adapters. It's all combined in one lightweight eyepiece sized device. The new, compact design configuration eliminates unnecessary components, weight, and associated costs. There is even reduced power consumpti