Lunt 40 mm Dedicated Hydrogen-Alpha Solar Telescope with B600 Blocking Filter and Feather Touch Focuser
Available on backorder
Key Features
- Compact 40 mm dedicated H-Alpha solar telescope for safe, high-contrast solar viewing
- Precision doublet objective optimized for the 656.28 nm H-Alpha wavelength (< 0.7 Å bandpass)
- Smooth, ultra-fine focusing with the 1.25" Feather Touch Focuser
- Includes B600 blocking filter, built-in TeleVue Sol Searcher, and Vixen-style dovetail
- Lightweight, portable design — perfect for travel, education, and solar imaging
Description
Experience the Sun in exquisite detail with the Lunt 40 mm Dedicated H-Alpha Solar Telescope featuring the Feather Touch Focuser — a compact yet powerful instrument built for precision solar observation and imaging. Combining exceptional optical craftsmanship with the smooth, ultra-fine control of the Feather Touch focusing system, this telescope delivers an unmatched viewing experience of our star.
Exceptional Solar Performance
At its heart lies a 40 mm precision doublet objective, meticulously optimized for the 656.28 nm hydrogen-alpha wavelength, revealing a dynamic world of prominences, filaments, granulation, and surface activity. An internal tilt-tuned etalon ensures a < 0.7 Å bandpass in single-stack mode, providing striking contrast and detail for both visual observation and imaging.
Smooth, Ultra-Fine Focusing
Equipped with the renowned Feather Touch 1.25" focuser, this version offers micro-precision focusing control — ideal for capturing subtle solar details or achieving perfect focus during astrophotography sessions. The focuser’s robust, smooth, and backlash-free mechanism makes it a favorite among advanced solar observers.
Compact, Lightweight, and Ready to Explore
With a 400 mm focal length (f/10) and weighing under 1.3 kg, the LS40THa-B600-FT is designed for portability and ease of use. A B600 blocking filter housed in 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.
What’s Included
- Lunt 40 mm H-Alpha Solar Telescope (40 mm aperture / 400 mm focal length)
- B600 blocking filter (1.25" diagonal housing)
- 1.25" Feather Touch Focuser
- Integrated Vixen-style dovetail plate
- Built-in TeleVue Sol Searcher Sun Finder
- Storage box with fitted foam insert (hard case optional)
Optional Accessories
- Larger blocking filter (B1200) for wider field and imaging flexibility
- Lunt Zoom Eyepiece or Eyepiece Set for enhanced visual observation
- Lunt Product Cases and Replacement Foam Inserts — available with or without foam (the LS40THa includes foam by default)
Compact, precise, and beautifully engineered, the Lunt 40 mm H-Alpha Solar Telescope with Feather Touch Focuser is perfect for astronomers who seek professional-grade solar performance in a portable and elegant design.
Specifications
| General | |
|---|---|
| Model Name | Lunt LS40THa-B600-FT |
| Type | Dedicated Hydrogen-Alpha Solar Telescope |
| Bandpass | < 0.7 Å (single stack) |
| Etalon Type | Internal, tilt-tuned |
| Tuning Range | ±1 Å Doppler shift |
| Wavelength (Central) | 656.28 nm (Hydrogen-Alpha) |
| Blocking Filter | B600 (6 mm) in 1.25" diagonal housing |
| Objective Type | Custom air-spaced doublet |
| Optical Coating | Ion Assist Ultra-Narrowband AR (optimized at 656 nm) |
| Etalon Material | UV-grade fused silica |
| Aperture | 40 mm |
| Focal Length | 400 mm |
| Focal Ratio | f/10 |
| Sun Image Size | ~3.7 mm |
| Focuser | 1.25" Feather Touch Focuser |
| Mounting Interface | Integrated Vixen-style dovetail plate |
| Sun Finder | Built-in TeleVue Sol Searcher |
| Storage | Box with fitted foam insert (hard case optional) |
| Weight | 1.3 kg (2.8 lb) |
| Dimensions | Approx. 41 cm length |
| Warranty | 5 years (manufacturer) |
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