Lunt Front Mount 40mm Double Stack Upgrade for LS40

The Lunt Front Mount 40mm Double Stack represents a significant upgrade for LS40 users seeking enhanced solar observation capabilities. This precision optical system delivers exceptional H-alpha contrast and detail, revealing intricate chromospheric features with remarkable clarity. The double stack configuration dramatically reduces bandwidth, enabling observation of fine prominences, filaments, and surface details that single-stack systems simply cannot resolve. Built to Lunt's exacting standards, this front-mounted design integrates seamlessly with your existing LS40 setup, providing professional-grade performance for serious solar astronomers and experienced observers.

Because the LS40FHa Solar Filter has an estimated bandpass of <0.70 Angstrom it is capable of providing high contrast views of both surface and edge detail. Significantly, adding an additional etalon system (double-stacking) will reduce the bandpass to ~<0.50. Allowing for higher resolution viewing and/or imaging. In addition, the part number LS40FHa is offered for this purpose or for those who already have a Lunt blocking filter.

LS40FHa Specifications: (single filter)

• Optical Aperture: 40 mm
• Etalon: <0.70 Angstrom
• Tuning: Tilt
• Focal Length: 400mm
• Filter Storage: Aluminum finished hard case with fitted foam
• Filter Weight: 0.4kg

Note: Only compatible with the 40mm Lunt Solar Telescopes