Quark Calcium H Eyepiece
DayStar
From ~$1,324.95
3 stores
In stock
The DayStar Quark Calcium H is an all-in-one solar filter eyepiece that transforms standard refractor telescopes into narrowband Calcium H-line solar telescopes. Simply insert it into your 1.25-inch diagonal, add an eyepiece, and observe the Sun's chromosphere, sunspots, and solar flares in vibrant violet detail. Optimized for f/7 to f/30 refractors, it combines DayStar's advanced optics in a compact, lightweight design with reduced power consumption, enabling all-day operation from an optional battery pack.
Specifications
| Full Disk Viewing Focal Length | 1800 mm |
| Maximum Recommended Aperture | 150 mm |
| Bandpass FWHM | 5″ |
| Clear Filter Aperture | 21 mm |
| Connection Type | 1.25 inch snout |
| Recommended Focal Ratio | f/7 - f/30 |
| No ERF Required Aperture | 80 mm |
| Wavelength | 3968.5 |
| AC Adapter Input | 90-240 VAC |
| Optical Coating Wavelength Optimization | 397 nm |
| Eyepiece Drawtube Output | 1.25 inch |
| Optional Battery Pack Duration | 8 h |
| Blocking Filter Size | 25 mm |