Lunt Internal Double Stack Filter for Lunt 130mm Solar Telescope

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Lunt Solar Systems has recently upgraded this double-stack system with its latest enhanced etalon configuration, delivering even greater solar contrast and finer surface detail than previous versions. All orders will ship with the newest design—no action needed!
Research-Grade Solar Views, Right From Your Backyard!
Take your Lunt Solar Systems 130mm or 152mm modular telescope to the absolute peak of H-alpha solar performance with the LFPT internal double-stack module. Designed specifically for Lunt’s largest Universal Modular Telescopes, the LFPT adds a second precision etalon to the optical path, narrowing the combined system bandpass to an ultra-high-contrast <0.28Å for breathtaking solar detail and some of the most advanced amateur solar observing possible.
With the massive light-gathering power and resolution of a 130mm or 152mm aperture combined with true double-stack performance, the LFPT unlocks an entirely new level of chromospheric detail. Filaments become darker and more structured, active regions reveal intricate magnetic complexity, and prominences display delicate internal texture and motion with stunning realism. The result is an observing experience that approaches research-grade solar performance while remaining accessible to dedicated solar astronomers.
Like Lunt’s other modular double-stack systems, the LFPT is designed for easy customer installation with no factory return required. It can be added at the time of purchase or upgraded later, allowing you to expand your telescope’s performance whenever you're ready to experience the Sun at its highest level of contrast and detail.
Specifications
- Single Etalon Bandpass: 0.35Å — individually verified
- DS Combined Bandpass: <0.25Å — two 0.35Å tilt-tuned etalons in series
- Compatible: Lunt 130 & 152 mm Solar telescopes
- Tuning: Independent Doppler True Barometric pressure tuning
-
Installation: Customer-installed — no factory return required
-
Night Sky Use: No impact — internal module does not affect night configuration
Other Information
- Country of Manufacture: United States
Research-Grade Solar Views, Right From Your Backyard!
Take your Lunt Solar Systems 130mm or 152mm modular telescope to the absolute peak of H-alpha solar performance with the LFPT internal double-stack module. Designed specifically for Lunt’s largest Universal Modular Telescopes, the LFPT adds a second precision etalon to the optical path, narrowing the combined system bandpass to an ultra-high-contrast <0.28Å for breathtaking solar detail and some of the most advanced amateur solar observing possible.
With the massive light-gathering power and resolution of a 130mm or 152mm aperture combined with true double-stack performance, the LFPT unlocks an entirely new level of chromospheric detail. Filaments become darker and more structured, active regions reveal intricate magnetic complexity, and prominences display delicate internal texture and motion with stunning realism. The result is an observing experience that approaches research-grade solar performance while remaining accessible to dedicated solar astronomers.
Like Lunt’s other modular double-stack systems, the LFPT is designed for easy customer installation with no factory return required. It can be added at the time of purchase or upgraded later, allowing you to expand your telescope’s performance whenever you're ready to experience the Sun at its highest level of contrast and detail.
Specifications
- Single Etalon Bandpass: 0.35Å — individually verified
- DS Combined Bandpass: <0.25Å — two 0.35Å tilt-tuned etalons in series
- Compatible: Lunt 130 & 152 mm Solar telescopes
- Tuning: Independent Doppler True Barometric pressure tuning
-
Installation: Customer-installed — no factory return required
-
Night Sky Use: No impact — internal module does not affect night configuration
- 1x Internal double stack filter
- 1x Aluminium hard case with fitted foam
Lunt Solar Systems has recently upgraded this double-stack system with its latest enhanced etalon configuration, delivering even greater solar contrast and finer surface detail than previous versions. All orders will ship with the newest design—no action needed!
Research-Grade Solar Views, Right From Your Backyard!
Take your Lunt Solar Systems 130mm or 152mm modular telescope to the absolute peak of H-alpha solar performance with the LFPT internal double-stack module. Designed specifically for Lunt’s largest Universal Modular Telescopes, the LFPT adds a second precision etalon to the optical path, narrowing the combined system bandpass to an ultra-high-contrast <0.28Å for breathtaking solar detail and some of the most advanced amateur solar observing possible.
With the massive light-gathering power and resolution of a 130mm or 152mm aperture combined with true double-stack performance, the LFPT unlocks an entirely new level of chromospheric detail. Filaments become darker and more structured, active regions reveal intricate magnetic complexity, and prominences display delicate internal texture and motion with stunning realism. The result is an observing experience that approaches research-grade solar performance while remaining accessible to dedicated solar astronomers.
Like Lunt’s other modular double-stack systems, the LFPT is designed for easy customer installation with no factory return required. It can be added at the time of purchase or upgraded later, allowing you to expand your telescope’s performance whenever you're ready to experience the Sun at its highest level of contrast and detail.
Specifications
- Single Etalon Bandpass: 0.35Å — individually verified
- DS Combined Bandpass: <0.25Å — two 0.35Å tilt-tuned etalons in series
- Compatible: Lunt 130 & 152 mm Solar telescopes
- Tuning: Independent Doppler True Barometric pressure tuning
-
Installation: Customer-installed — no factory return required
-
Night Sky Use: No impact — internal module does not affect night configuration
Other Information
- Country of Manufacture: United States
- 1x Internal double stack filter
- 1x Aluminium hard case with fitted foam
