H alpha etalon filter 5 angstrom bandpass. LS60FHa H-Alpha Filter, 60mm front-mounted non-obstructed hydrogen-alpha filter for use on a wide range of telescopes! Accommodates LS60THA and LS60MT Telescopes without need for adapter Connect the Lunt LS60FHa to your telescope with the appropriate adapter (sold separately), or use it to double-stack on an existing Lunt 60mm LS60THa solar telescope or filter for a ~<0. 50mm H-alpha double-stack solar filter, for all LS50FHa filter-systems and LS60THa/LS60MT telescopes. The LS60FHa H-Alpha Filter without a blocking filter is available for those with a Lunt blocking filter. There are two primary types of etalon filters used in solar telescopes: single etalon and double etalon systems. But a regular telescope can also be converted to an H-alpha scope. Because of the bandwidth of <0. The easy handling makes this telescope ideal for starting H-Alpha solar observation. Sep 8, 2022 · The Baader SunDancer II H-alpha Filter (with heated H-alpha Etalon from SolarSpectrum) transforms an existing telescope quickly and easily into a high performing H-alpha telescope. Front Hydrogen Alpha FIlters By adding one of these front mounted H-Alpha etalon filters and a rear mounted blocking filter, you can convert any night time refractor to become a powerful H-Alpha solar telescope. 5A, increasing visibility of surface detail and active regions Coronado by Meade SolarMax II 90mm Double Stacking Etalon with RichView tuning system. The etalon uses ‘RichView’ tuning in common with their other H-alpha telescopes and the diagonal incorporates a 10 mm blocking filter. Jun 8, 2022 · That is about 100 times narrower than regular ‘narrowband’ filters, which are typically in the 3-9 nm range. By hiding all other information, the sun’s appearence changes and details like faculae and prominences become visible. This add on filter reduces the normal bandwidth of a SolarMax 60 telescope or filter set from the single stack . A B600 blocking filter provides full disk images on telescopes up to 540 mm focal length. Sep 20, 2021 · The Baader SunDancer II H-alpha Filter (with heated H-alpha Etalon from SolarSpectrum) transforms an existing telescope quickly and easily into a high performing H-alpha telescope. This double-stack Etalon is compatible to all Lunt Solar Systems LS60FHa filter-systems and LS60THa / LS60MT telescopes. This double stacked unit excels at observation of solar surface detail with a sub 0. Etalon At the heart of every H-alpha telescope is the etalon. The New Lunt 40mm Solar Telescope is a F/10 hydrogen-alpha dedicated telescope for solar vieweing only. LS100FHa Solar Filter The Lunt LS100FHa Solar Filter is a 100 mm aperture with a Root 3 non-centralized obstruction integrally tuned etalon for use on a customer-supplied refractor. Features two H-alpha etalon filters, one internal and one external, to provide a narrower bandpass and higher contrast images. Blocking-filter is the B600, this is very good for visual observation of the sun. External Full Aperture Lunt Etalon with tilt-tuning adjustment allows for a 0. 55-angstrom sliver of hydrogen-alpha light. This double-stack Etalon is compatible to all Lunt Solar Systems LS50FHa filter-systems and LS60THa / LS60MT telescopes. This Hydrogen-alpha filter is designed to retrofit (adapters required) a customer-supplied telescope for use during the day. 7 angstroms and a blocking filter built-in to a prism star diagonal. 100mm H-alpha solar filter system with B600 blocking filter, for front mounting at telescopes with 2" focuser, and up to 540mm focal length. The excitement of viewing our star through an H-alpha solar telescope is sure to provide many hours of visual enjoyment and educational insight. 5 Å. 5A, increasing visibility of surface detail and active regions on the Lunt 152mm Double Stack H-alpha Etalon Filter is an equipment item of class Filter on AstroBin equipment database. The Quantum SEgrade series are designed for most amateur and some academic applications. On this page, you can find suitable products like: Complete H-alpha telescopes H-alpha filters for your telescope Energy rejection filters and cells Calcium filters. This add on filter reduces the normal bandwidth of a SolarMax 40 telescope or filter set from the single stack . 7 refractor equipped with 60mm external hydrogen – alpha (H-α) filters. The fringes are not as sharp as usual (due to issues like proper collimation of the light beam) but gives a good idea how the H-alpha etalon functions. 50 (dependent on scope), enabling higher-resolution viewing and imaging. 65 Angstrom bandpass. This is no general-use refractor with a solar filter over the aperture—the Heliostar is built with a highly precise Solis etalon bandpass filter, refined by a Trifid tuner, to block all but a 0. Traditional H alpha solar telescopes have been sold in two basic configurations; single etalon and the very costly double etalon systems. So you will have much more contrast and more The SolarMax III (SMIII) is a 70mm F/5. This element provides a very narrow passband centered on Hydrogen Alpha, while reflecting the solar background from 550 nm to 750 nm. 7 Ångström it is capable to provide high contrast. LS50FHa solar filter The Lunt LS50FHa Solar Filter is a 50 mm aperture (no central obstruction) integrally tuned etalon for use on Lunt ED Refractors. The Sky-Watcher Heliostar 76mm f/8. 5A band pass! Choose 50mm H-alpha double-stack solar filter, for all LS50FHa filter-systems and LS60THa/LS60MT telescopes. The etalons available are simply screwed to a separate adapter that fits your current telescopes dew sheild. Oct 22, 2025 · The primary filter is the initial H alpha etalon positioned at 656. Contrary to standard astronomical filters that use coatings to block unwanted light, etalons use two reflective surfaces placed closely together that interact in such a way that only light of certain frequencies will pass through The SolarMax III (SMIII) is a 70mm F/5. [2] These filters can be dichroic filters manufactured by multiple (~50) vacuum-deposited layers. Fit your telescope with an H-alpha solar filter to get dramatic views of solar prominences, filaments, and active sunspot groups. With a 30mm blocking filter and case, this H-Alpha solar telescope offers the best tuning adjustment on the market today. This makes single etalon systems well-suited for viewing small, high-contrast features like prominences or filaments. 28 nm, or slightly longer in wavelength. Lunt Solar will be introducing a larger selection of ED Telescopes that will meet your Solar needs for Daytime observing and meet the additional requirements of Nighttim Available for H-alpha, Na D, Ca II K-Line, Helium and Custom wavelength Filters. 25" non-rotating helical There are two primary types of etalon filters used in solar telescopes: single etalon and double etalon systems. The star diagonal in which the blocking filter is installed, is equipped as standard for 1. For telescopes up to 80mm aperture, you do not need any further accessories as the Baader SunDancer II H-alpha Filter already includes an achromatic 3x telecentric with T-2 connection. As the Sun becomes increasingly active Sep 8, 2021 · Depending on the construction and dimensions of the etalon, only the H-Alpha line remains with some secondary maxima, which are filtered out by the last filter (indicated by the vertical red bar). With the proper plate spacing, the light undergoes interference, producing a series of very narrow resonant passbands one of which (at the H-alpha line) can be selected via a blocking filter arrangement. This double-stack Etalon is compatible to all Lunt Solar Systems LS50FHa filter-systems and LS60THa / LS60MT telescopes. 5A, increasing visibility of surface detail and active regions Lunt LS50FHa 50 mm H-Alpha Solar Filter Lunt Solar recommends that customers pair their Lunt filters with Lunt products to ensure the entire system is sound and performs well. H-alpha solar filters show the sun in a very narrow range of visible light, the H-alpha range. Our Universal Day and Night and “Dedicated” H-Alpha Solar Telescopes come standard with Lunt’s exceptional Hydrogen Alpha Modules, providing excellent viewing prowess at < 0. The blocking filter eliminates unwanted wavelengths that can pass through the Etalon, ensuring optimal resolution and preventing potential damage to optics and eyes. 7Å (0. It is essential to use a Lunt blocking filter with Lunt Ha filters at all times. When sunlight passes through these instruments, you observe the red H-alpha spectral line at 656. Featuring Solis Etalon Technology and Trifid Tuner, it captures detailed solar phenomena, ideal for high-resolution viewing and imaging. So you will have much more contrast and more Oct 14, 2017 · Page 1 of 2 - Pre-Filters for H-Alpha Etalon - Test Results - posted in Solar Observing and Imaging: I decide to investigate the effects of UV-IR cut filters and deep red filters on the H-Alpha images obtained from my Lunt LS50 and Celestron NexImage 10. This Lunt Hydrogen-Alpha Solar Filter features 50 mm aperture with no central obstruction and is an integrally tuned etalon optimally equipped for use with Lunt ED Apr 25, 2021 · H-alpha: Baader 160mm D-ERF, iStar 150/10 H-alpha objective, 2" Baader 35nm H-a, 2" Beloptik KG3, Lunt 60MT etalon, Lunt B1200S2 BF, Assorted T-S GPCs or 2x "Shorty" Barlow, ZWO ASI174. 7A performance to a more restrictive . The primary filter is the initial H alpha etalon positioned at 656. 25 inch eyepiece connection. This set consists of an H-alpha etalon with half-width of less than 0. Adding this additional double-stack Etalon system will reduce the bandwidth to ~<0. The exception is if you mounted a front mounted etalon on the larger aperture obstructed optic scope and masked the aperture with it. Larger blocking filters suitable for longer focal length telescopes are also available options. 5Å leading to improved contrast in details observed on the sun's disc. The Coronado SolarMax III 90mm telescope features a full 90mm etalon with direct tuning of the primary etalon filter for a greater tuning range and improved bandpass adjustment over previous generations. With an integrated Vixen-style dovetail plate for easy mounting and transportation, it's tailored for on-site use. The 60mm aperture is double stacked with one internal etalon filter and one external etalon filter for a bandwidth of <0. The LS100FHa H-alpha Etalon filter system with 100mm aperture for use on any refractor and many other telescopes. It is easily removable so that the scope can continue to be used for night observing. There are dedicated H-alpha telescopes designed for this purpose. It employs a 2-inch rack and pinion focuser having both coarse and fine tuning controls and, complete with a Sol Ranger finder and 18 mm CEMAX eyepiece, costs ~£2,630. 90mm diameter primary H-Alpha etalon filter. [2] These filters can be dichroic filter s manufactured by multiple (~50) vacuum-deposited layers. Designed and Manufactured in North America. Single Etalon: A single etalon filter typically has a narrower bandwidth, providing high contrast for detailed solar observations but at the cost of limiting the field of view. These Hydrogen-alpha filters are designed to retrofit (adapters required) the customer-supplied telescope for use during the day. Coronado by Meade SolarMax II 60mm Double Stacking Etalon with RichView tuning system. Sky-Watcher's Heliostar 76mm H-Alpha Solar Telescope offers advanced solar observation with double stack performance at a single stack price. Etalons are the primary filters used in dedicated solar telescopes to isolate the H-alpha light emitted by the Sun. This filter is bonded to a high contrast rectangular passband sputtered passband coating on a fused silica substrate. 7A performance to a more restrictive 0. Featuring a dedicated Lunt full aperture H-alpha etalon and B1200 blocking filter, it's perfect for both visual observing and solar photography. LS60FHa H-Alpha Filter The Lunt LS60FHa is a 60 mm aperture (no central obstruction) integrally tuned etalon for use on a customer supplied refractor. Any obstructed optic needs a full aperture energy rejection filter to be able to use h-alpha etalon filter systems. The LS50 configuration includes the B600 blocking filter, which works in conjunction with the main Etalon to further narrow down the bandpass to strictly H-Alpha. See the Sun in vivid detail! See more here! The LS60 Hydrogen-alpha etalon filter system with 60 mm aperture for use on any refractor and many other telescopes. Double Etalon: A double etalon system uses two etalon filters in tandem to improve the wavelength selectivity, reduce the overall bandwidth, and enhance the contrast and image clarity across a wider field of view. 65 angstroms bandpass. Learn what this telescope can do The Lunt 50 mm Dedicated Hydrogen-Alpha Solar Telescope, complete with a Pressure Tuner, provides the basic essentials perfect for a first time introduction to solar observing. LUNT LS60FHa2/B600 H-alpha Single Pass Front Mount Etalon System for telescopes with 2" focuser and up to 540mm focal lentgh. LS60FHa H-Alpha Filter The Lunt LS60FHa is a 60 mm aperture (no central obstruction) integrally tuned etalon for use on a customer supplied refractor. Commercially available H-alpha filters for amateur solar observing usually state bandwidths in Angstrom units and are typically 0. 7 refractor equipped with 60mm external hydrogen – alpha filters. Used around the world by serious solar enthusiasts and professional research facilities alike for observation of surface detail and prominences on the Sun in hydrogen-alpha (Ha) light. An H-alpha filter is an optical filter designed to transmit a narrow bandwidth of light generally centred on the H-alpha wavelength. The SolarMax II 60 Double Stack is a dedicated H-Alpha solar viewing telescope with a 60mm SolarMax filter, a T-Max 60 tuner, a BF-15 blocking filter, and a Cemax 25mm eyepiece. Nov 17, 2021 · The purpose of an Energy Rejection Filter is to prevent as much solar energy as possible from entering the telescope in the first place and thus avoid excessive heating of the etalon of an H-alpha filter. The entire SunDancer is simply Providing ultra narrow filters such as H alpha solar filters is only one of the products we provide world wide. Apr 27, 2019 · This filter also needs to be behind a (the already existing one from the etalon) blocking filter to work. The big advantage would be the high transmission and the 2 cavity design which will cause a much better selectivity of the h-alpha band then a single cavity one. 07 nm). This is done most effectively by a filter in front Features two H-alpha etalon filters, both internal. 40mm diameter primary H-Alpha etalon filter. The Lunt Solar 40 mm Dedicated H-Alpha Telescope offers exceptional solar observing in a compact design. Nov 13, 2022 · Here is the etalon aligned so that one of the interference fringes coincides with the H-alpha line. The LS60 Hydrogen-alpha filter system with 60mm aperture (no central obstruction) integrally tuned etalon for use on any refractor and many other telescopes. These filters meet the critical DayStar quality control criteria applicable in all visual and some photographic environments. A 1. 60mm diameter primary H-Alpha etalon filter. This add-on filter reduces the normal bandwidth of a SolarMax 90 telescope or filter set from the single stack 0. An etalon is a pair of plane-parallel optical surfaces which are partially reflecting and partially transmitting. 55 Angstrom (dependent upon used telescope). Because the LS60FHa has an estimated bandpass of LS60FHa Specifications: (single filter) Optical Aperture: 60 mm Etalon: Internal 60mm H-alpha double-stack solar filter, for all LS60FHa filter-systems and LS60THa/LS60MT telescopes. Coronado SolarMax II 40mm Double Stacking Etalon with RichView tuning system. 3 H-Alpha Solar Telescope is a dedicated optic for solar viewing only. See also Double-stacking via an additional etalon system can further reduce the bandpass to ~<0. An even more narrow band filter can be made using a Lyot filter. Features two fully tunable H-alpha etalon filters, one internal and one external. By using a second etalon, this can be reduced to 0. Apr 23, 2014 · He placed the H-alpha Fabry – Pérot etalon, plus blocker and trimmer filter parts, in front of the spectroscope slit. 28 nanometers. tcw ivyuxj ntiira yax jonvh mbolzavf pyrj fhzpdr ayhf miuebw ssatz ptity dtses dlow sggfqb