Lunt LS50FHa Front Mount 50mm Double Stack Solar Filter
1 310,00 €
50mm front-mount H-alpha etalon filter with no central obstruction for Lunt ED refractors. Converts a compatible telescope into an H-alpha solar instrument by day, easily removable for nighttime use.
Available on backorder
Description
The Lunt LS50FHa is a 50mm front-mount hydrogen-alpha etalon filter with no central obstruction, designed for use on Lunt ED refractors. It converts a compatible telescope into an H-alpha solar instrument during the day, and is easily removable for nighttime use.
The filter provides an estimated bandpass of <0.70 Å (single), and when used as a double-stack addition to an existing system, narrows the bandpass to approximately <0.50 Å for enhanced contrast.
Important: A matching Lunt blocking filter is required for safe viewing (safety requirement). Choose the blocking filter that suits your telescope’s focal length and intended use:
- B600 — up to 540mm focal length (visual)
- B1200 — up to 1080mm focal length (imaging + visual)
- B1800 — up to 1620mm focal length (imaging + visual)
Specifications
| Optical Aperture | 50 mm |
| Obstruction | None |
| Bandpass (single) | <0.70 Å |
| Bandpass (double stack) | ~<0.50 Å |
| Tuning | Integral tilt tuning |
| Compatible With | Lunt ED refractors |
| Required Accessory | Lunt blocking filter (sold separately) |
Explore these guides from our Astro Wiki to learn more about this type of equipment:
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