Daystar QUARK Chromosphere
When will I receive it?
Products marked In stock are dispatched promptly — the exact delivery estimate for your address is shown at checkout, before you confirm the order.
For international shipments, delivery times depend on the destination and are always displayed at checkout before payment.
Products marked Available on order require 5–15 business days for processing. Our team will keep you updated promptly if anything changes.
What are the warranty terms?
Shop with confidence: all our products include a 24-month legal warranty for conformity defects, managed directly by our team.
Many brands also offer extended warranty coverage beyond 24 months — contact us to find out the specific terms for the product you're interested in.
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Can I return a product?
Yes: you have 14 days from delivery to return any product and receive a full refund — see our Refund Policy for full details.
Items must be returned in their original condition and packaging. Return shipping costs are the customer's responsibility.
Not sure which product is right for you? Contact us before buying — we'll help you find the perfect instrument so you won't need to return anything.
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Vai al moduloTurn 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.