Lunt 40 mm Dedicated Hydrogen-Alpha Solar Telescope with B600 Blocking Filter and Rack & Pinion Focuser

Description

Experience the Sun with remarkable clarity using the Lunt 40 mm Dedicated H-Alpha Solar Telescope, now equipped with the Lunt Solar 1.25" Rack & Pinion (R&P) Focuser. Designed for precise, safe solar observation, this compact system delivers excellent optical performance while offering robust, mechanical stability for both visual use and imaging.

Exceptional Solar Performance

The telescope features a 40 mm air-spaced doublet objective, engineered specifically for the 656.28 nm hydrogen-alpha wavelength, bringing solar prominences, filaments, active regions, and chromospheric details into vivid view. Its internal tilt-tuned etalon achieves a < 0.7 Å bandpass, producing the high contrast needed for detailed solar structure and dynamic atmospheric features. Whether you're observing visually or capturing solar images, this optical configuration provides crisp, high-resolution results.

Precision Rack & Pinion Focusing

This version replaces the Feather Touch focuser with Lunt’s 1.25" Rack & Pinion focuser, a durable and highly stable focusing system designed for solar applications.

The R&P mechanism offers:

• Smooth, controlled focusing motion
• Improved mechanical rigidity under accessories
• Minimal backlash when properly adjusted
• Reliable performance under thermal variation

The R&P focuser is ideal for users who need solid load capacity and consistent focus repeatability, especially when using heavier eyepieces or small-format solar cameras.

Compact, Lightweight, and Ready for Solar Exploration

With a 400 mm focal length (f/10) and a weight under 1.3 kg, the LS40THa-B600-R&P is highly portable for travel, outreach, or fast setup sessions. A B600 blocking filter integrated into a 1.25" diagonal ensures safe, high-contrast solar viewing.

The telescope also features an integrated Vixen-style dovetail plate for easy mounting and a built-in TeleVue Sol Searcher for effortless solar alignment. These features make the LS40 a superb choice for beginners, educators, and seasoned observers alike.

What’s Included

• Lunt 40 mm H-Alpha Solar Telescope (40 mm aperture / 400 mm focal length)
• 6 mm B600 blocking filter in 1.25" diagonal housing
• Lunt Solar 1.25" Rack & Pinion Focuser
• Integrated Vixen-style dovetail plate
• Built-in TeleVue Sol Searcher
• Storage box with fitted foam insert (hard case optional)

Optional Accessories

• Larger 12 mm B1200 blocking filter for wider field and improved imaging
• Lunt Zoom Eyepiece or Eyepiece Set for enhanced visual observation
• Lunt hard cases and replacement foam inserts

The Lunt 40 mm H-Alpha Solar Telescope with Rack & Pinion Focuser offers a highly capable and easy-to-use platform for exploring the dynamic face of the Sun — compact, precise, and built with the quality expected from Lunt Solar Systems.

Specifications