This double-stack etalon solar filter is compatible with all LS50FHa filter systems and LS60THa / LS60MT telescopes from Lunt Solar Systems.
By adding this double-stack Etalon system, the half-width can be reduced to approximately <0.55 Angstrom (depending on the telescope used). This significantly increases the contrast on the sun's surface, allowing more details on the sun to be seen.
If the filter is used single-stacked with an optional blocking filter, the half-value width is <0.75 Angstrom.
- Opening: 50 mm
- Tuning: tiltable Etalon
- Front thread: M90x1 internal thread, rear thread: M90x1 external thread
Please note: Only to be used as a double-stack filter or together with an additional blocking filter (available separately).
A suitable blocking filter is essential for the operation of a solar telescope.
