DAYSTAR Combo Quark Prominence Filter

Filter Properties :

• Hydrogen-alpha bandpass
• Integrated 25mm blocking filter
• 21mm clear filter aperture
• Tuned to 0.8-0.6Å for viewing prominences
• Tuning knob allows for ±0.5Å wing shift for Doppler-shift compensation
• Markers at every 0.1Å for reference and repeatability
• Internal baffles increase contrast
• Optical coatings designed specifically for 656nm H-alpha wavelength
• LED indicators for power, warming, ready, and fault
• Use and Handling
• 2° off axis 1.25″ front adapter for use with off axis Schmidt and Maksutov energy rejection filters
• Fits 1.25″ diagonals and drawtubes
• Accepts 1.25″ eyepieces
• Brass compression ring to protect eyepiece from scratches
• Recommended OTA Specifications
• No aperture limitation
• For use with f/15-f/30 refractors, or Schmidt and Maksutov-Cassegrain OTAs
• Maksutov OTAs with a focal ratio of up to f/15 can be used at full aperture, but must use a front-mount ERF to prevent overheating the OTA
• Schmidt OTAs must use an off-axis aperture reduction ERF
• Full-disk viewing on refractors up to 1800mm focal length
• Not for use with full aperture Schmidt-Cassegrain OTAs – damage to secondary mirror may result

Power

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