Quark H-Alpha Eyepiece - Prominence Model
DayStar
From ~$1,324.95
2 stores
The DayStar Quark H-Alpha Eyepiece - Prominence Model is an all-in-one hydrogen-alpha solar filter that integrates a 4.2x telecentric Barlow lens, etalon filter, tuning optics, and eyepiece adapter into a single compact assembly for direct insertion into a telescope diagonal. Optimized for observing solar prominences with a 0.6-0.8 Angstrom bandpass, this narrowband filter transforms standard refractors into specialized solar telescopes while preserving their use for nighttime astronomy. Compatible with refractors having focal ratios of f/4 to f/8 with apertures up to 150mm, it offers convenient USB power operation with an optional palm-sized battery pack for all-day observing without complex configurations or additional adapters.
Specifications
| Compatible Focal Ratios | f/4 to f/8 |
| Tuning Increment | 0.1 |
| H-Alpha Wavelength | 656 |
| Optics type | Telecentric Barlow with Fabry Perot Etalon |
| Maximum Focal Length | 450 mm |
| Bandpass | 0.6″ |
| Eyepiece Compatibility | 1.25 inch |
| Barlow Magnification | 4.2 |
| Input Voltage | 90 V |
| Filter Model | Prominence |
| Maximum Aperture | 150 in |
| Diagonal Compatibility | 1.25 inch or 2 inch |