Lunt LS40THa Standard Kit

40mm Dedicated H-Alpha Solar Telescope   The LS40THa Standard Kit is Lunt's most portable dedicated solar telescope — a 2.6-pound grab-and-go instrument that puts serious hydrogen-alpha performance in your hands at the most accessible price in the Lunt range. Point it at the Sun and you are looking at the chromosphere in real detail, with a verified bandpass of <0.35Å that the competition at this aperture cannot match. The front-mounted tilt-tuned etalon achieves 0.35Å because the optical path in a front-mounted system has fewer glass elements to broaden the bandpass — the etalon works directly with the incoming light before it enters the telescope tube. The result is a 40mm instrument that delivers chromospheric contrast comparable to what larger internal-etalon systems achieve only with double-stack configurations. Prominences arc off the limb in defined detail. Filaments trace complex paths across the disk. Active regions reveal magnetic structure that wider-bandpass instruments blend into the background.   It is worth stating directly: the LS40THa Standard outperforms the Acuter Elite Phoenix 40 on every measurable specification, while costing $360 less. The Acuter delivers 0.6Å against Lunt's 0.35Å — nearly double the bandpass, at a price premium. Lunt specifications are individually verified on a precision precision metrology equipment. Acuter specifications are unverified marketing claims. The Acuter has no viable double-stack option — independent observers have documented that DS attempts with the Phoenix 40 produce reflections and tunnel effects that make the result unusable. The Lunt LS40THa Standard is DS-capable from day one: add the LS40FHa double-stack filter at any time to bring combined system bandpass to <0.25Å.   At 2.6 pounds with the integrated 4" Vixen dovetail, this telescope is equally at home on a photo tripod at an eclipse site as it is on a permanent mount in the garden. The SunLock red dot finder gets you on target safely in seconds. The 12mm flat-field eyepiece provides 33x magnification for detailed solar views. The aluminum hard case with custom foam insert travels as well as the telescope.   KEY SPECIFICATIONS Aperture 40mm, full unobstructed Focal Length / Ratio 400mm f/10 Etalon Type Front-mounted, tilt-tuned Bandpass (Single Stack) <0.35Å — individually verified Double Stack Optional — add LS40FHa DS filter → <0.25Å combined Blocking Filter B600 — 5mm clear aperture Focuser Mini helical 1.25", non-rotating, T2 thread, brass compression ring Eyepiece 12mm flat-field, 60° FOV, 0.1% AR — 33x on LS40THa Finder SunLock red dot finder Dovetail 4" Vixen-style Case Aluminum hard case with custom foam insert Weight ~2.6 lbs Night Use Dedicated solar — daytime use only