Lunt LS130MT H-Alpha Solar Telescope - Flagship Kit

The 130mm ED Triplet Optical Foundation

At the heart of the LS130MT is an air-spaced ED apochromatic triplet objective. This advanced optical design provides a sharp, high-contrast image with color correction that is not only critical for detailed solar work but also makes it a formidable performer for high-resolution nighttime viewing of the Moon, planets, and double stars. This is not just a solar telescope; it is a versatile, high-end refractor that excels at any high-magnification task you set for it.

Doppler True Tuning with Pressure-Tuned Etalons

Lunt's Doppler True Tuning (DTT) system uses air pressure to adjust the etalon's bandpass, a method that is mechanically superior to tilt-tuning. By gently increasing the pressure in the etalon cavity, you shift the filter's transmission line precisely onto the hydrogen-alpha wavelength without introducing any off-axis aberrations. This ensures the entire solar disk remains uniform in brightness and detail, a critical factor for professional-level imaging and visual observation.

Revealing the Chromosphere with the Internal Double-Stack

This Flagship Kit includes the internal Large Format Pressure-Tuned (LFPT) double-stack etalon, the key to unlocking the highest-contrast solar views. This second etalon narrows the system's final bandpass to less than 0.28Å, significantly darkening the solar photosphere and causing the delicate, fibrous details of the chromosphere to leap out. With the double-stack engaged, solar active regions, filaments, and plages are rendered with a three-dimensional quality that single-stack systems cannot replicate.

At this bandpass, the Sun transforms. A target like Active Region 3664, even at 100x magnification, reveals not just the umbra of its sunspots but the complex, swirling super-penumbral fibrils that trace the magnetic field lines around them. Prominences on the limb, often seen as simple bright structures, resolve into intricate, multi-layered hedgerows of flowing plasma, with their motion and evolution visible over the course of an observing session.

The B1800 Blocking Filter for Full-Disc Imaging

The included B1800 blocking filter features a large 18mm aperture, providing a fully illuminated field for imaging the entire solar disk with most standard astronomy cameras. A smaller blocking filter can vignette the image, darkening the edges of the Sun in your final picture. The B1800 ensures that from edge to edge, your sensor receives an even field of light, critical for creating seamless, professional-quality solar mosaics and full-disc captures.

Precision Focus with the Rack & Pinion Focuser

A high-resolution optical system requires an equally precise focuser. The LS130MT employs a robust dual-speed 1:10 rack and pinion focuser that provides zero image shift and can handle the weight of heavy cameras, filter wheels, and eyepiece configurations without slipping. The fine-focus knob allows for the tiny, critical adjustments needed to snap the faintest solar features into perfect view, a task that is often impossible with less stable focuser designs.

Modular Telescope (MT) for Day and Night Versatility

The "MT" designation signifies this telescope's modular capability. With simple tools, you can remove the hydrogen-alpha module and convert the LS130MT into a world-class nighttime refractor. This versatility makes it an exceptional value, providing two observatory-grade instruments in one package. Its only real limitation is its size and weight; this is an instrument that requires a substantial equatorial mount (like an EQ6-R or larger) to perform at its best, making it less suited for quick "grab-and-go" sessions.

Choosing Your Lunt MT Series Telescope

Lunt's MT series offers a clear progression in aperture, with each step providing a significant increase in resolving power. The choice depends on your observing goals, mount capacity, and seeing conditions.

• LS80MT vs. LS130MT: The LS80MT is a more portable, forgiving instrument that performs well under average seeing conditions and on lighter mounts. The LS130MT is a significant step up in both resolution and weight. It will resolve finer detail on solar granulation and in the structure of prominences, but requires excellent atmospheric seeing and a heavier-duty mount to deliver that performance.
• LS100MT vs. LS130MT: The LS100MT is often considered the sweet spot for many observers, offering a substantial increase in resolution over the 80mm while remaining manageable on mid-tier mounts. The LS130MT is the choice for the dedicated solar imager or observer who has the permanent or semi-permanent setup to support its size and wants the highest possible resolution when conditions permit.