{"product_id":"lunt-ls40tha-h-alpha-solar-telescope-enhanced-kit","title":"Lunt LS40THa H-Alpha Solar Telescope - Enhanced Kit","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e40mm Aperture Dedicated Hydrogen-Alpha Solar Telescope\u003c\/li\u003e\n\u003cli\u003eInternal Etalon with Tilt-Tuning for \u0026lt;0.55Å Bandpass\u003c\/li\u003e\n\u003cli\u003eEnhanced Kit with Upgraded 1:1 Rack \u0026amp; Pinion Focuser\u003c\/li\u003e\n\u003cli\u003eIncludes B600 Blocking Filter for a Wider Imaging Field\u003c\/li\u003e\n\u003cli\u003eIntegrated SunLock Solar Finder and Vixen-Style Dovetail\u003c\/li\u003e\n\u003cli\u003eComplete package includes a 12mm eyepiece and hard case\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eWatch the Sun Come Alive: The Lunt LS40THa Solar Telescope\u003c\/h2\u003e\n\u003cp\u003eThe Lunt LS40THa H-Alpha Solar Telescope - Enhanced Kit is a complete, grab-and-go system designed to reveal the dynamic, violent nature of our nearest star. This package is built around a 40mm dedicated solar refractor that makes the sun's chromosphere visible, transforming a quiet yellow disk into a landscape of fiery prominences, active regions, and delicate filaments. The Enhanced Kit provides key upgrades over the standard package, making it the right choice for observers who want a more refined operational experience and a clear path toward solar imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e40mm Aperture: Your Portable Window to the Chromosphere\u003c\/h3\u003e\n\u003cp\u003eThe LS40THa is built around a 40mm singlet objective lens with a 400mm focal length. This f\/10 system is intentionally designed for portability and performance under typical daytime seeing conditions. Atmospheric turbulence often limits the useful resolution of larger solar telescopes, allowing this compact instrument to deliver sharp, high-contrast views on days when bigger scopes struggle.\u003c\/p\u003e\n\u003cp\u003eThis aperture is ideal for observing the full solar disk in one field of view. It provides the perfect image scale to watch prominences erupt from the limb and track the evolution of active regions as they crawl across the sun's face. Its light weight means it can be mounted on any simple photo tripod or a small equatorial mount for easy tracking.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eTilt-Tuned Etalon for High-Contrast Views\u003c\/h3\u003e\n\u003cp\u003eThe heart of the LS40THa is its internal, front-mounted solid etalon. This precision filter is factory-set to a bandpass of less than 0.55 Angstroms, isolating the specific wavelength of hydrogen-alpha light. This narrow bandpass extinguishes the brilliant, overwhelming light from the photosphere, allowing the much fainter details of the chromosphere to become visible.\u003c\/p\u003e\n\u003cp\u003eTo fine-tune the filter for maximum contrast on different features, the telescope uses a simple and robust tilt-tuning mechanism. A small thumbwheel on the side of the optical tube physically tilts the etalon. This allows you to shift the filter's bandpass slightly, which causes surface features like filaments and plage to \"pop\" into view or enhances the delicate structure of prominences against the blackness of space.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eThe B600 Blocking Filter Advantage\u003c\/h3\u003e\n\u003cp\u003eThe Enhanced Kit includes the upgraded B600 blocking filter, a critical component housed within the 90-degree star diagonal. This secondary filter provides the final, essential stage of energy rejection for safe observing. The \"600\" designation refers to its 6mm aperture, which is a significant step up from the standard B500 filter.\u003c\/p\u003e\n\u003cp\u003eThis larger clear aperture provides a wider, unvignetted field of view at the eyepiece. For visual observers, this results in a more evenly illuminated view of the full solar disk. For imagers, it is a mandatory upgrade, ensuring your camera sensor is fully illuminated edge-to-edge, preventing dimming in the corners of your solar images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eUpgraded 1:1 Rack \u0026amp; Pinion Focuser\u003c\/h3\u003e\n\u003cp\u003eAnother key feature of the Enhanced Kit is the 1:1 rack and pinion focuser. This is a direct upgrade from the helical focuser found in the standard package, offering a more stable and precise focusing experience. The motion is smoother, making it easier to find that perfect point of sharp focus, especially at higher magnifications.\u003c\/p\u003e\n\u003cp\u003eThe rack and pinion design is also better at handling the weight of cameras and larger eyepieces without slipping or shifting. This non-rotating mechanism ensures your camera remains oriented correctly as you focus, eliminating the need to re-frame your shot after each adjustment. It is a practical upgrade that significantly improves the telescope's usability, particularly for imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eObserving with the LS40THa: A Live View of Solar Fury\u003c\/h3\u003e\n\u003cp\u003eWith the included 12mm eyepiece, the LS40THa operates at 33x magnification, a perfect power for framing the entire sun. After using the SunLock finder to safely center the disk, you will see a deep, ruby-red ball. As your eye adapts, the view transforms. Along the limb, you might see a hedgerow prominence, a wall of plasma arcing tens of thousands of miles into space, its structure changing over minutes.\u003c\/p\u003e\n\u003cp\u003eBy adjusting the tilt-tuner, the bright active regions on the surface darken, revealing the intricate, web-like structure of filaments snaking across the disk. One trade-off of the simple tilt-tune system is that it can create a slight brightness gradient, but this is easily managed by keeping your target of interest in the \"on-band\" sweet spot. This instrument makes observing the sun an active, engaging experience, not a passive one.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eLS40THa Kit Comparison: Finding Your Fit\u003c\/h3\u003e\n\u003cp\u003eLunt offers the LS40THa in several packages to match different observer goals. Understanding the trade-offs helps you make the right choice.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard Kit:\u003c\/strong\u003e This entry-level package includes the same optics but uses a B500 blocking filter and a helical focuser. It's a capable choice for purely visual, casual solar observing where minimizing cost is the top priority.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnhanced Kit (This Model):\u003c\/strong\u003e By upgrading to the B600 blocking filter and the rack \u0026amp; pinion focuser, this kit offers a better visual experience and a solid foundation for basic solar imaging. It represents the sweet spot for performance and value.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePremium PLUS Kit:\u003c\/strong\u003e This package includes the B600 filter, R\u0026amp;P focuser, and adds an external LS40FHa double-stack etalon. Double-stacking narrows the bandpass to \u0026lt;0.35Å, dramatically increasing surface contrast and making the chromosphere's texture appear almost three-dimensional. It is the ultimate choice for dedicated solar enthusiasts who demand the highest level of detail.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the advantage of the B600 blocking filter in the Enhanced Kit?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe B600 blocking filter has a larger 6mm aperture compared to the standard 5mm B500. This provides a wider, more evenly illuminated field of view, which is better for imaging and for observing the full solar disk with certain eyepieces without dimming at the edges.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Lunt LS40THa good for solar imaging?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the Enhanced Kit is a great starting point for solar imaging. The upgraded rack \u0026amp; pinion focuser provides smoother, more stable focusing, and the B600 blocking filter illuminates the camera sensor more effectively than the standard B500.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I see sunspots with this H-alpha telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile this telescope is designed to view the chromosphere (prominences, filaments), you can see the dark umbra of very large sunspots. However, for detailed views of sunspot structure in the photosphere, a white-light solar filter on a standard nighttime telescope is the proper tool.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the LS40THa compare to the LS50THa?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe LS50THa has a larger 50mm aperture, which provides slightly higher resolution and a brighter image. The LS40THa is smaller, lighter, and more affordable, making it an excellent portable or entry-level option that still delivers excellent views.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I upgrade this telescope to a double-stack system later?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. You can purchase the Lunt LS40FHa front-mounted etalon separately at any time. This filter threads onto the front of your LS40THa, easily converting it to a double-stack system for significantly higher-contrast views of surface detail.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of mount do I need for the LS40THa?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe LS40THa is very lightweight (under 4 lbs) and includes a Vixen-style dovetail. It works well on a simple alt-azimuth mount like a Vixen Porta II, a Sky-Watcher AZ-GTe, or even a sturdy photographic tripod with a fluid video head.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Type\u003c\/td\u003e\n\u003ctd\u003eDedicated H-alpha Solar Telescope\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e40 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e400 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBandpass\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;0.55 Ångström\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTuning\u003c\/td\u003e\n\u003ctd\u003eTilt-Tuned Internal Etalon\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlocking Filter\u003c\/td\u003e\n\u003ctd\u003eB600 (6mm) in 90° Diagonal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser\u003c\/td\u003e\n\u003ctd\u003e1.25\" Rack \u0026amp; Pinion Focuser\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eIntegrated SunLock Vixen-style Dovetail\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e3.8 lbs (1.7 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eLS40THa Telescope Optical Tube\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eB600 Blocking Filter in 1.25\" Diagonal\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e1.25\" Rack \u0026amp; Pinion Focuser\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eSunLock Vixen-Style Dovetail (4\")\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eLunt 12mm Eyepiece\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eHard Carrying Case\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/luntsolarsystems.com\/wp-content\/uploads\/2022\/07\/LS40THa_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/luntsolarsystems.com\/warranty-registration\/\" rel=\"noopener\" target=\"_blank\"\u003eLunt Solar Systems 5-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lunt Solar Systems","offers":[{"title":"Default Title","offer_id":51221379711261,"sku":"LSS-LS40THa-Enhanced","price":1533.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Lunt-LS40THa-Enhanced-Kit.jpg?v=1777426716","url":"https:\/\/davidastro.com\/fr\/products\/lunt-ls40tha-h-alpha-solar-telescope-enhanced-kit","provider":"David Astro","version":"1.0","type":"link"}