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| en:ost:telescope:heliostar76 [2026/04/01 12:39] – created rhainich | en:ost:telescope:heliostar76 [2026/05/08 06:16] (current) – [Solis Etalon] rhainich |
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| ==== Solis Etalon ==== | ==== Solis Etalon ==== |
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| At the heart of the Heliostar 76 Hα is //Sky-Watcher's// proprietary Solis Etalon Technology. Conventional Hα solar telescopes typically achieve a bandwidth of 0.7–0.8 Å; reaching below 0.5 Å — which significantly improves contrast and fine detail — normally requires a second etalon (known as "double stacking"). The Heliostar 76 Hα achieves a bandwidth of < 0.55 Å with a single etalon. | At the heart of the Heliostar 76 Hα is //Sky-Watcher's// Solis Etalon Technology, which achieves a bandwidth of < 0.55 Å. Hα solar telescopes with one etalon typically achieve a bandwidth of 0.7–0.8 Å. Achieving a bandwidth of 0.5 Å or less, which significantly improves contrast and fine detail, normally requires a second etalon (known as "double stacking"). This technique is known as ‘double stacking’. It is used, for example, in our [[:en:osst | Coronado Solar Max II]]. |
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| ===== Operation ===== | ===== Operation ===== |