Daystar QUARK Chromosphere
When does the delivery take place?
Delivery times vary depending on the country and destination postal code. They will be shown at checkout and apply only to products currently in stock.
For products marked as Not in stock, processing may take between 5 and 15 days. If delays occur, our customer service will contact you with timely updates.
What are the warranty terms?
All our products come with a 24-month legal warranty. Some brands provide extended warranty. Contact us for more info.
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Can I return a product?
You have the right to return a product within 14 days from delivery, as stated in our Refund Policy. Return shipping costs are the responsibility of the customer. Items must be returned in their original condition and packaging. Please contact us before returning.
Turn your refractor into an H-Alpha solar telescope
The Daystar QUARK Chromosphere is an all-in-one electronic solar eyepiece designed to convert any refractor into a powerful H-Alpha solar telescope. Simply insert it into the diagonal or focuser, connect the USB power supply, warm it up and start observing.
The Chromosphere version is optimized for maximum contrast on the solar surface: granulation, filaments, active regions and sunspots appear with extraordinary sharpness. Prominences at the solar limb remain visible. The typical bandpass ranges from 0.3 to 0.5 Å, the narrowest in the QUARK range.
Integrated system with 4.3x telecentric Barlow
The QUARK integrates a 4.3x telecentric Barlow lens with two elements, optically and coating-optimized for the H-Alpha wavelength at 656 nm. The telecentric path ensures light rays strike the etalon in parallel, delivering uniform spectral performance across the entire field. The 12 mm blocking filter with 21 mm clear aperture produces a flat image field for visual observation and imaging. Optimized for refractors with focal ratio F/4 to F/9. Full solar disk visible with focal lengths up to ~450 mm.
Technical specifications
| Feature | Value |
|---|---|
| Central wavelength | 656.3 nm (H-Alpha) |
| Bandpass (FWHM) | 0.3 – 0.5 Å |
| Integrated Barlow | 4.3x, 2 elements, optimized 656 nm |
| Blocking filter | 12 mm, clear aperture 21 mm |
| Recommended focal ratio | F/4 – F/9 |
| Full solar disk up to | ~450 mm focal length |
| Input connection | 1.25" or 2.0" with safety slot |
| Eyepiece output | 1.25" with brass compression ring |
| Power supply | USB 5 V / 1.5 A (adapter included) |
| Band tuning | ±0.5 Å with detents every 0.1 Å |
| Warranty | 5 years |
ERF filter: when is it needed?
No additional filter is required for refractors up to ~80 mm. For apertures between 80–130 mm, a UV/IR cut filter in front of the diagonal is sufficient. For refractors over 130 mm, reflector telescopes or extended solar sessions, a front-mounted ERF is recommended. Petzval and oil-spaced refractors always require a front ERF.