Lunt H-Alpha Double-Stack Etalon 50 mm solar filter

LUNT LS50FHa H-alpha double-stack solar filter

50mm H-alpha double-stack solar filter, for all LS50FHa filter-systems and LS60THa telescopes.

This double-stack Etalon is compatible to all Lunt Solar Systems LS50FHa filter-systems and LS60THa telescopes. Adding this additional double-stack Etalon system will reduce the bandwidth to ~<0.50 Angstrom (dependent upon used telescope). So you will have much more contrast and more details on the sun will be visible.

Without blocking filter! Only for use as double-stack filter, or together with a additional available blocking filter. If the filter is used only single stacked together with a optional blocking filter, then the bandwidth is <0.75 Angstrom.

Technical data:
• Aperture: 50 mm
• No central obstruction
• Bandwidth double stacked: <0,50 Angstrom
• Tuning: tiltable Etalon
• Housing diameter: 95 mm
• Length: 73 mm
• Weight: 0.7 kg
• Front thread: M90x1 female thread
• Rear thread: M90x1 male thread

Delivered by order:
• LS50FHa solar filter
• Transport case
• Instruction manual