LS40THa Enhanced Kit - 40mm Dedicated H-Alpha Solar Telescope

The LS40THa Imaging-Ready Kit builds on our entry-level package with two targeted upgrades for observers ready to explore solar imaging, or who simply want smoother, more precise mechanical performance.

The B600 blocking filter increases clear aperture from 5mm to 6mm, providing additional back-focus clearance for camera sensors and reducing edge vignetting with larger eyepieces. The 1.25" Rack & Pinion Focuser replaces the helical design with precision CNC-machined components, an integrated brake system that eliminates focus drift, and load capacity that handles cameras and filter wheels without compromise.

What You'll See

The same stunning chromospheric views as the entry-level kit: prominences arcing off the limb, filaments threading across the disk, active regions glowing with magnetic energy. The <0.65Å bandpass and full unobstructed aperture are identical. The difference is in how precisely you can hold and capture those views. The rack-and-pinion focuser with integrated brake means your focus point stays exactly where you set it, whether you are observing visually or attaching a camera. The B600's larger clear aperture ensures the full image circle reaches your sensor without vignetting.

Why This Package

If you are thinking about solar imaging, or if you simply want the best mechanical performance available for the LS40THa system, this is your package. The CNC-machined rack-and-pinion focuser is a fundamentally different experience from the helical design: smoother travel, positive lock, and 6-8 pound load capacity for cameras and accessories. The B600 blocking filter is the smart upgrade for anyone planning to grow. Its 6mm clear aperture provides the clearance that imaging sensors demand and eliminates edge effects with larger eyepieces.

Package Includes

• LS40THa OTA: 40mm aperture, 400mm FL, f/10. Front-mounted tilt-tuned etalon, <0.65Å bandpass. Full unobstructed aperture. Dedicated H-alpha solar telescope.
• B600 Blocking Filter: 1.25" diagonal housing, 6mm clear aperture. Expanded clear aperture for imaging clearance and reduced vignetting.
• 1.25" R&P Focuser (1:1): CNC-machined aluminum/brass. 0.5" travel. Rotatable. Integrated brake with variable drag. Brass compression ring. 6-8 lb capacity.
• SunLock Red Dot Finder: Red dot projection onto glass reticle. Internal 3-point alignment screws. Red anodized aluminum.
• 4" Vixen Dovetail Plate: Black anodized aluminum. Two 1/4-20 tapped holes. Includes mounting screws. Universal mount compatibility.
• Hard Case (40mm): Silver aluminum, 18.5" x 10.5" x 7". Custom-fit foam insert.
• 12mm Flat-Field Eyepiece: 1.25" barrel. 60° FOV. 5-element design. 0.1% AR coatings (etalon-grade). 33x on LS40THa.