DayStar QUARK CHROMOSPHERE Solar Filter

Daystar Filters designed this version of the QUARK H-Alpha Eyepiece Solar Filter specifically for viewing chromosphere details. The chromosphere’s surface structure behaves differently in active regions than quiet areas, where magnetic field lines are stronger, so viewing this portion of the sun provides a constantly-changing observational experience.

Filter Properties:

• Hydrogen-alpha bandpass
• Integrated 12mm blocking filter
• 21mm clear filter aperture
• Tuned to 0.5-0.3Å for viewing chromosphere details
• Tuning knob allows for ±0.5Å wing shift for Doppler-shift compensation
• Markers at every 0.1Å for reference and repeatability
• LED indicators for power, warming, ready, and fault
• Optics
• Integrated 4.3x Barlow lens
• Lens and optical coatings designed specifically for 656nm H-alpha wavelength
• Two-element telecentric lens design keeps light waves parallel to flatten the field of view and reduce parallax as magnification increases

Recommended OTA Specifications:

• No aperture limitation
• Best performance with f/4-f/8 refractors
• Full-disk viewing on refractors up to 450mm focal length
• For apertures over 80mm (3.1″), or for long-duration solar viewing, an UV/IR cut filter should be used for energy rejection
• Not suited for off-axis applications

Power:

• 5 VDC, 1.5A micro-USB port
• 90-240 VAC wall adapter
• Set of international outlet plugs for US, UK, EU, and Australia