40mm Dedicated Hydrogen-Alpha Solar Telescope w/ B600 Blocking Filter & Helical Focuser
Lunt
From $857.00
2 stores
The Lunt 40mm is a dedicated hydrogen-alpha solar telescope engineered specifically for safe, full-disk solar observation of prominences, filaments, and surface details. Featuring a 40mm aperture with F/10 focal ratio, it delivers bright, high-contrast views using Lunt's precision hydrogen-alpha etalon with a narrow bandpass below 0.7 angstroms. The B600 blocking filter provides a 6mm clear aperture, making it ideal for visual observation and photography with excellent eye safety through military-specification light filtering. At just 2.6 pounds and under 15 inches long, this grab-and-go solar scope is equally suited for beginners learning solar observing or experienced astrophotographers seeking a portable companion instrument.
Specifications
| Focal ratio | f/10 |
| Solar Image Size | 3.67 mm |
| Etalon Type | Full Aperture Lunt Etalon |
| Length | 15 in |
| Blocking Filter Aperture | 6 mm |
| Sun Finder | Tele Vue Sol-Searcher |
| Etalon Net Finesse | 19 |
| Aperture | 40 mm |
| Wavelength | 656.28 |
| Focuser Type | Non-Rotating Helical Focuser |
| Etalon Peak Transmission | 88% |
| Lens Type | Precision Doublet Refractor |
| Etalon FSR | 12 |
| Focal length | 400 mm |
| Bandpass | 0.65″ |
| Focuser Size | 1.25 in |
| Intended Use | Solar Observation and Imaging |
| Mount type | Integrated Vixen-Style Dovetail |
| Weight | 2.6 lb |
| Blocking Filter | B600 |