DayStar Filters Sodium QUARK Na D-Line Eyepiece Solar Filter (1.25")
| Article number: | DSZSD |
| Availability: | More on the Way to us |
| Delivery time: | More on the Way to Us |
The DayStar Quark Sodium D Filter is a precision solar filter designed to isolate the sodium D spectral lines, allowing safe and detailed observation of the Sun in this unique wavelength. This filter reveals the solar atmosphere’s subtle structures, including prominences, flares, and network patterns that are not visible in broadband light, offering a specialized and scientifically rich solar observing experience.
Engineered for easy integration, the Quark Sodium D Filter fits into your telescope’s focuser like a standard eyepiece, with all optical components—including the etalon and blocking filter—fully contained within a compact, self-contained unit. Its built-in electronic thermal regulation maintains a stable, narrow bandpass for high-contrast, crisp imaging or visual observation. Operation is simple and convenient via a standard 5V USB connection.
Key Features
• Isolates the Sodium D spectral lines for specialized solar observation
• Compact eyepiece-style design with integrated etalon and blocking filter
• Built-in thermal regulation ensures stable, high-contrast performance
• Fits standard focusers for easy installation
• USB-powered for convenient operation
• Ideal for visual observation and high-resolution solar imaging
The DayStar Quark Sodium D Filter is a versatile tool for serious solar observers seeking to explore the Sun in a unique spectral line, providing professional-level performance in a convenient, user-friendly package.
- 1.25" or 2.0" combo eyepiece snouts with safety indent slot directly into your diagonal
- Standard 1.25 eyepiece drawtube output with optional 2" and SCT accessories available.
- Brass compression ring to protect eyepiece. Uses USB power, 5v 1.5amp Includes 90-240VAC wall adapter with international plug adapters.
- Tuning knob allows wing shifting +/- 0.5Å with detents at every 0.1Å LED indicator for power, warming, ready, fault 5 year warranty,
- Optional 8-hour battery pack available. Integrated, fully baffled 2 element telecentric 4.2X barlow
- Integrated 12mm blocking filter 21mm clear filter aperture
- Best performance with F/4 - F/8 refractors
- Full disk viewing possible on refractors up to ~450mm focal length refractors
- No aperture limitations. May be used on larger refractors for higher magnification views
- Ships in convenient Twist-Case for safe, dust-free storage.
- Not suited for off-axis application.