This double-stack Etalon is compatible to all Lunt Solar Systems LS100FHa filter-systems. Also the LS100THa H-alpha solar telescopes can be very easily double-stacked by using this 100mm double-stack filter. This combination offers high quality double-stacking to the observer. Adding this additional double-stack Etalon system will reduce the bandwidth to <0.55 Angstrom. 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 <0.7 Angstrom.
The kit includes:
|Bandwidth double stacked||<0.55 Angstrom|
|Housing diameter, mm||162|
|Front thread||M120x1.5 female thread|
|Rear thread||M120x1.5 male thread|