DayStar Quark Prominence (Demo Unit)

DayStar Quark Prominence (Demo Unit)

Description

The DayStar Quark Prominence is an all-in-one Hydrogen-Alpha solar filter that converts a standard refractor telescope into a high-performance solar instrument. It combines a solid-state Fabry-Perot etalon, a 4.2x telecentric lens optimized for the 656 nm wavelength, and a complete blocking filter system covering from X-ray to infrared.

The Prominence model provides a brighter image with a wider bandwidth, ideal for viewing solar prominences and limb details, while maintaining excellent image quality.
No additional adapters are required — the Quark fits directly into a 1.25" or 2" diagonal and features a brass compression ring to protect eyepieces.

The built-in tuning knob allows wavelength adjustment of ±0.5 Å with 0.1 Å detents, and a status LED indicates power, warming, and ready states. Powered by 5V USB at 1.5A, it can run all day on an optional portable battery.
Optimized for f/4 to f/8 refractors, the Quark enables full-disk solar viewing on focal lengths up to 450 mm and includes a protective twist-lock storage case.

Technical Specifications

• Manufacturer: DayStar Instruments

• Model: Quark Prominence

• Type: H-alpha solar filter for refractors

• Central wavelength: 656.28 nm (H-alpha)

• Effective bandwidth: varies with telescope

• Telecentric lens: integrated 4.2x doublet optimized for 656 nm

• Blocking filter: 12 mm integrated

• Clear aperture: 21 mm

• Recommended focal ratio: f/4 to f/8

• Connections: 1.25" or 2" nosepiece, 1.25" output

• Focuser clamp: brass compression ring

• Power supply: USB 5V – 1.5A

• AC adapter: 90–240V with international plug set

• Tuning control: ±0.5 Å, 0.1 Å increments

• LED indicator: power / warming / ready / fault

• Full-disk viewing: up to 450 mm focal length

• Warranty: 5 years

• Country of manufacture: USA

• Case: included