Add a new wavelength to your solar observations: the Quark Magnesium I b2 reveals active regions and the chromospheric network at 517.28 nm. For compatible F/4 to F/8 refractors, for visual observation and imaging, with a protective filter suitable for this line.
CHF 1'399.00incl. Swiss VAT
Will be ordered for you
Timeframe: 10 days to 3 weeks
Estimated shipping: Between November 21 and 26, 2026
The Quark Magnesium I b2-line opens up a new window of solar observation, revealing
strong areas magnetized of the Sun in the bright Magnesium I (b2) at 5172.8 Å.
As the human eye is particularly sensitive to this wavelength, the image obtained is more "bright". such as Calcium, Alpha Hydrogen or even Sodium,
which greatly facilitates visual observation and reduces exposure time for photography.
You can already see that in H-alpha ? The Quark Magnesium provides a complementary view of active regions and the chromospheric network. Its value lies in allowing you to take multiple observations with a compatible telescope and then compare your images at different wavelengths. The filter holder and accessories must be verified for each filter.
This model is designed for F/4 to F/8 refractors. The DayStar Official Compatibility Checker helps guide the decision; the Specific instructions for Quark Magnesium remain decisive factors, particularly the incompatibility of red or yellow ERFs with this species.
Visit DayStar Solar Accessories allow you to adapt the connection to the eyepiece or camera: 1.25-inch or 2-inch connectors, T- or C-mounts, and adapters, depending on the model. Thread compatibility, focus extension, and focus must be checked for each combination. Accessories are sold separately.
In astrophotography, a DayStar tilt adapter can help reduce Newton's rings. The results depend on the camera and the settings; see the Manufacturer's installation instructions to choose the right adapter.
DayStar has been developing solar equipment for over 50 years. Whether for an introductory course, an educational activity, or an imaging program, Contact Deep Space Astronomy Please provide the model of your instrument, your camera (if applicable), and your lenses: we'll help you choose a suitable setup and provide a quote.
| Wavelength | 5172.8 Å (Magnesium line I b2) |
|---|---|
| Bandwidth | ≈ 0.4 Å or narrower |
| Compatible telescopes | F/4 to F/8 refractors |
| Optical elements | Fabry-Pérot etalon, optimized for 517 nm |
| ERF compatibility | Specific ERF filters required - red or yellow glass filters do not allow Magnesium to pass through. UV/IR cut filter recommended for added safety. |
| Output | Standard 1.25″ runner (2″ options available) |
| Power supply | USB 5V 1.5A - all-day operation with optional compact battery |
| Blocking | Integrated 25 mm blocking filter, 21 mm clear aperture |
| Warranty | 5 years |
Simply insert the Quark Magnesium I b2-line in the angled return of your F/4 to F/8 refractor,
add an eyepiece and observe. No complex adjustments required.
⚠️ The use of a suitable energy rejection filter (ERF) is essential to protect your instrument and ensure safe operation.
