With Double-Stacking, the Halfwith of the filter can be reduced and details on the Sun´s surface can be enhanced. This is the first choice for serious Solar observers.
With this filter LS60 telescopes and LS50FHa filter systems show even more details on the solar surface
With this module LS80MT & LS100MT telescopes show even more details on the solar surface
Reduces effectively possible reflections by double-stacking LUNT LS80MT and LS100MT H-alpha solar telescopes
LUNT LS130THA/DSII DOUBLE-STACK MODUL FÜR LS130
Doublestack Etalon Filter for the new Lunt LS50THa H-Alpha Telescope.
LuntSolarSystems - Solarfilter 100mm Ha Double Stack Etalon (Matched)