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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 0.5-0.3â„« for viewing chromosphere details
Tuning knob allows for ±0.5â„« wing shift for Doppler-shift compensation
Markers at every 0.1â„« 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