The Lunt Solar Telescope LS50THa/B600PT 50/350 is a dedicated H-alpha solar telescope designed to reveal details in the Sun's chromosphere. It can show prominences at the solar limb as well as features such as filaments and active regions across the solar disc.
Its H-alpha system is tuned to the 656.28 nm spectral line; Pressure Tuning allows the etalon to be finely adjusted to the H-alpha line. The B600 blocking filter (6 mm) is matched to this configuration. With a 50 mm aperture and 350 mm focal length (f/7), it offers a useful basis for choosing eyepieces and compatible imaging equipment. The optical design is sonnenteleskop, h-alpha. Please note that models specified as an OTA are supplied without a mount.
Safe solar observing: Use the telescope only when the complete, undamaged H-alpha filter system is correctly assembled, and follow the manufacturer's instructions. Never look at the Sun through the telescope if any part of the solar filter system is missing or damaged.
Technical data
| Optical design | H-alpha solar telescope |
| Aperture | 50 mm |
| Focal length / focal ratio | 350 mm / f/7 |
| H-alpha wavelength | 656.28 nm |
| Etalon tuning | Pressure Tuning (Pressure Tuning) |
| Blocking filter | B600, 6 mm |
| Focuser | helical focuser |
| Configuration | Optical tube assembly (OTA), mount not included |
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