Lunt LS100MT Premium Kit

LS100MT Premium Kit - Universal modular day & night telescope 100 mm H-Alpha Double Stack

The LS100MT Premium Kit is the pinnacle of Lunt Solar Systems' 100 mm range. It combines FPL53 ED triplet 100 mm f/7 with an internal SFPT double-stack H-alpha system with independent pressure-tuned double standards. The result is very high-resolution chromospheric performance with a combined bandwidth of less than 0,28 Å, This is currently one of the highest contrast levels available on a portable instrument.

Each unit is individually tested on Lunt metrology systems to ensure verified specifications, including spectral accuracy of standards and overall optical coherence.

This telescope is designed to offer two instruments in a single system: a reference H-alpha solar observatory and a top-of-the-range 100 mm triplet ED telescope for nocturnal astronomy.

FPL53 ED triplet 100 mm premium optics

The LS100MT Premium is based on a lens FPL53 ED triplet 100 mm f/7 with ion-assisted broadband AR treatments.

This configuration guarantees :

• Near-apochromatic color correction
• Extremely high contrast in sunlight and at night
• High light transmission
• Excellent image stability at high resolution

The FPL53 triplet makes full use of the 100 mm separating power for imaging and visual observation.

SFPT double-stack internal dual-pressure system

The heart of the LS100MT Premium is the SFPT Internal Double Stack :

• Two internal Pressure-Tuned calibrators in series
• Independent True Doppler adjustment for each standard
• Combined bandwidth < 0.28 Å
• Optical alignment maintained over the entire adjustment range

This architecture allows very fine control of contrast and spectral selection without any mechanical compromise due to tilt.

Ultra-high-resolution H-Alpha solar observation

With an aperture of 100 mm and a double stack sub-0.28 Å, the LS100MT Premium reveals the solar chromosphere in exceptional detail:

• Structured and cellular beach networks
• Multilayer filaments with defined dark cores
• Complex active regions with evolving fine structures
• Protuberances with internal flows and visible stratification
• Dynamic evolution visible in real time

At this level of performance, the chromosphere becomes a three-dimensional dynamic structure that can be observed live.

Independent Pressure-Tuned double tuning

The system incorporates two independent True Doppler tuners:

• Separate setting of each standard
• Fine optimization of contrast and detail
• Spectral response can be adapted to atmospheric conditions
• Advanced control of visible structures (surface vs. protuberances)

This setting flexibility is a key feature of high-end double-stack systems.

Premium night-time astronomy

By removing the H-alpha modules, the LS100MT Premium becomes a reference 100 mm f/7 triplet ED refractor:

• High-definition lunar observation
• High-contrast planetary observation
• Excellent color correction
• Luminous, detailed deep-sky observation
• High capacity for long exposure imaging

The same optical system ensures consistent quality in both sun and night mode.

B1800 blocking filter for advanced imaging

The LS100MT Premium is equipped with a blocking filter B1800 :

• 18 mm diameter clear
• Full-format sensor compatibility
• Full illumination without vignetting
• Suitable for high-resolution solar imaging

This filter is optimized to take full advantage of the 100mm image field.

Motorized 2″ dual-speed eyepiece holder

The focusing system includes :

• Rack & Pinion 2″ eyepiece holder
• Fine reduction 10:1
• High load capacity
• ZWO EAF compatibility for motorization

Focusing accuracy is essential to exploit the extreme resolution of the double-stack system.

7.2-21.5 mm zoom eyepiece included

The LS100MT Premium includes a high-quality zoom eyepiece:

• Continuous magnification range without changing eyepieces
• 7.2-21.5 mm (from wide field to high magnification)
• 53° to 40° apparent field
• Anti-reflective coating 0.1 %
• Quasi-perfocal design

This system instantly adapts magnification to seeing conditions and the solar structures observed.

Ergonomics and mechanical structure

The LS100MT Premium retains its robust, portable design:

• Integrated solar handle with red dot finder
• Permanent alignment of the pointing system
• 8-inch Vixen rail for optimal balancing
• Rigid case with custom foam

This architecture guarantees stability, precision and ease of use in the field.

LS100MT Premium Kit contents

• LS100MT OTA : 100 mm f/7 FPL53 ED triplet, 700 mm focal length, ion-assisted broadband AR treatments
• SFPT Internal Double Stack : two internal Pressure-Tuned standards, bandwidth < 0.28 Å, dual independent adjustment
• B1800 blocking filter : 18 mm, full-format compatible
• 2″ R&P 10:1 eyepiece holder: ZWO EAF compatible
• Integrated solar handle : with red dot finder
• Vixen 8-inch rail : anodized aluminum
• Hard case : customized protective foam
• Zoom eyepiece 7.2-21.5 mm : 7 elements, 0.1 % AR, 53°-40°, with

Summary table of technical specifications

Conclusion

The LS100MT Premium Kit is an absolute reference instrument for high-resolution H-alpha solar observation. Thanks to its double-stack SFPT sub-0.28 Å system, FPL53 ED triplet 100 mm optics and modular day/night design, it offers a rare combination of extreme contrast, optical flexibility and advanced imaging performance.