Explore sunspots and granulation in the Sodium D2 line at 589 nm, in addition to H-alpha. For compatible F/4 to F/8 refractors, with a protective filter suitable for Sodium; results depend on the instrument and atmospheric conditions.
CHF 1'215.00incl. Swiss VAT
Will be ordered for you
Timeframe: 10 days to 3 weeks
Estimated shipping: Between November 21 and 26, 2026
Transformez votre réfracteur F/4–F/8 en un instrument d’observation solaire haute résolution avec ce filtre solaire Sodium D2 tout-en-un. Le design combine filtre, adaptateurs et snout en une seule unité compacte.

Sodium D2 completes a configuration H-alpha to study sunspots and other structures with varying contrast. This is one way to take your observation and imaging skills to the next level while continuing to use a compatible telescope. The quality of the results also depends on the aperture and atmospheric turbulence.
Designed for F/4 to F/8 refractors, this model requires protection suitable for sodium. The DayStar Official Compatibility Checker and Quark Sodium Instructions are used to prepare the assembly. Red ERFs do not transmit this line; DayStar yellow ERFs are among the solutions recommended by the manufacturer.
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.
| Type | Sodium D2 Solar Filter at 589 nm |
|---|---|
| Compatibility | F/4-F/8 refractors |
| Eyepiece outlet | 1,25″ standard, snout inclus |
| Blocking filter | Integrated |
| Power supply | USB 5 V 1.5 A, incl. 90-240 V mains adapter |
| Baffles | Present for contrast enhancement |
| AR Coatings | Optimized for 589 nm |
| Supplied box | Compact, lightweight, optional battery pack available |
| Security | Recommended for use with specific ERF filter and UV/IR cut filter |