Lunt Solar Systems Filters H-alpha double-stack solar filter LS100FHa (15931)

The Lunt Solar Systems LS100FHa H-alpha double-stack solar filter is a premium front-mounted filter system designed for advanced solar observation in H-alpha light. With a large 100mm aperture and no central obstruction, this filter is engineered to deliver high-contrast, detailed views of the Sun’s surface and edge features, such as prominences, filaments, and sunspots. The double-stack configuration reduces the bandpass to less than 0.5 Angstrom, significantly increasing the level of visible detail and contrast compared to single-stack systems. This filter is intended for use with compatible refractor telescopes and requires a suitable Lunt blocking filter for safe operation. An adapter plate may be necessary to mount the filter, depending on your telescope model.

The LS100FHa double-stack filter is an ideal choice for solar astronomers seeking maximum detail and contrast in H-alpha observations. It is compatible with Lunt’s 100mm solar telescopes and filter systems and can be easily removed when the telescope is used for night-time astronomy. Always ensure a proper blocking filter is installed during solar observation for safety and optimal performance.

Specifications

Capacity

• Half-value width (bandpass): 0.5 Angstrom for double-stack configuration

• Connection: M120x1.5 thread

• Frame: Lens filter

General

• Length: 101 mm

• Diameter: 162 mm

• Weight: 2750 g

• Type: Solar filter

• Type of build: Line filter