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Lunt Solar ST 40/400 LS40T Ha B500 Solar Telescope Specs
| Brand | Lunt Solar Systems |
| Full Model Code | Lunt Solar Systems LS40T/B500 Dedicated Hydrogen-Alpha Solar Telescope (LS40T-B500) |
| Country of Origin | United States |
| Optical Design | Dedicated Hydrogen-Alpha Refractor (Single-Aperture Etalon System) |
| Aperture | 40 mm (1.57 inches) |
| Focal Length | 400 mm |
| Focal Ratio | f/10 |
| Optical Coatings | Fully Multi-Coated Optimized Solar Wavelength Refractive Coatings |
| Glass Material | Precision Laser-Polished Optical Substrates with B500 Blocking Filter Core |
| Secondary Mirror Obstruction | 0 mm (None) |
| Secondary Mirror Obstruction by Diameter | 0% |
| Secondary Mirror Obstruction by Area | 0% |
| Resolving Power | 2.90 Arcseconds (Dawes), 3.46 Arcseconds (Rayleigh) |
| Limiting Visual Magnitude | Daytime Solar Tracker Asset (Not Applicable for Night Starlight Scaling) |
| Highest Useful Magnification | 80x |
| Lowest Useful Magnification | 6x |
| Optical Tube Material | Premium CNC-Machined Aluminum Structural Chassis (White and Anodized Red Accent Finish) |
| Focuser Style & Mechanism | 1.25-inch Helical Focuser Assembly with Fine Precision Friction Adjustment Track |
| Mirror Lock Mechanism | No (Equipped with Integrated Tilting Etalon Chamber Tuning Wheel) |
| Optical Tube Dimensions | 80 mm x 370 mm |
| Optical Tube Weight | 1.20 kg (2.65 lbs) |
| Mount Attachment Type | Integrated Low-Profile Clamping Block with Standard 1/4-inch Thread and GP Dovetail Bar Interface |
| Finder Scope Specification | Optional Lunt Sol-Searcher Solar Finder Alignment Device Block |
| Included Accessories | LS40T Solar Telescope, Tilting Etalon Module, B500 Blocking Filter Diagonal (1.25-inch), Helical Focuser, Vixen/GP Dovetail Bar |
| Standard Warranty | 5-Year Limited Warranty |
| Application | Ultra-portable visual solar monitoring and promotional eclipse tracking, optimizing system cost with a narrow B500 filter optimized specifically for small-field eyepieces. |
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