The LUNT LS40THa/B500 HA solar telescope reveals the true, dynamic face of our central star. We can watch "live" as the hot hydrogen gas erupting from the Sun's surface evolves as protuberances and changes almost minute by minute before our eyes. If you've only ever seen the surface of our sun in visible light, H-alpha telescopes open up a whole new dimension of solar observation.
The LUNT LS40THa/B500 HA solar telescope with a diameter of 40 mm and a focal length of 400 mm is a high-quality, affordable instrument that is optimal for visual use. Its light weight and compact size make the telescope extremely easy to carry and even an average photo tripod will hold it steady. There is of course a suitable thread on the telescope for mounting on a photo stand, but it can also be used with an astronomical mechanism that accepts Vixen rails.
The anti-glare 40 mm etalon filter on the front of the tube guarantees a bandwidth of 0.7A. This allows the atmospheric as well as "surface" features of the Sun to be observed with high contrast. Because the rotation of the Sun causes the light coming from the far side and the light coming from the near side of the observer to arrive at slightly different wavelengths, this difference can be corrected by an adjustment ring on the side of the block filter.
The LUNT LS40THa/B500 HA solar telescope has a B500 type block filter built into the zenith mirror, which makes it primarily suitable for visual observations. If photographic use is an important consideration, it is preferable to choose models with a larger block filter, which will give a larger vignette-free field of view, but their price is proportionally higher as the block filter size increases. For photographic use, it is important to consider that these instruments have a very short back focus, so it is mainly astrophotographic cameras that should be tried. The zenith mirror can accommodate any 1.25" eyepiece. The telescope can be focused using the helical eyepiece holder.
The telescope weighs 1.2 kg and is 41 cm long. Optionally, any 1.25" standard eyepiece can be attached to the telescope. The sun finder is part of the product.