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Lunt LS50FHa 50mm H-Alpha Double Stack Etalon Solar-Filter

Lunt LS50FHa 50mm H-Alpha Double Stack Etalon Solar-Filter

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1.90 kg
Our price:
including VAT 20.00 % ( £237.33 )

The Double-Stack Etalon Solar-Filter for all LS50FHa Filter-Systems and LS60THa Telescopes.
Please note, THIS ITEM IS NOT A STAND-ALONE UPGRADE KIT FOR A REFRACTOR TELESCOPE! This is an addition to a solar filter or solar telescope to increase its contrast and detail by reducing the bandwidth..


  • LS50FHa Main Filter
  • Aluminium Transport case

Adding this additional Double-Stack etalon system will reduce the bandwidth to about <0.55 Angstrom (dependant upon used telescope).
So you will have much more contrast and more details on the Sun will be visible.

Technical Specification:
Aperture: 50 mm
No central obstruction
Bandwidth double stacked: <0.5 Angstrom
Tuning: tiltable Etalon
Housing diameter: 95 mm
Length: 73mm
Front thread: M90x1 female thread
Rear thread: M90x1 male thread
Weight: 0.85 kg

Please note: it comes without a Blocking Filter! Only for use as double-stack filter, or together with an 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.

AVAILABLE ON BACK ORDER! (ETA: about 1-3 weeks)

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