Lunt Solar 50mm Pressure Tuned H-Alpha Telescope

The 50 mm Pressure Tuned H-alpha Telescope - B600 Blocking Filter by Lunt Solar Systems: The LS50T is a refractor-based system with a 50 mm aperture and an internal-mounted etalon with Pressure Tuner adjustment. This system allows for a <0.75 Angstrom band pass. Type: Single Interference Etalon - Tuning: Internal Pressure Tuner (Doppler True Tuning)Aperture: 50 mm - Focal Length: 350 mm - Focal Ratio: f/7Band pass: <0.75 Angstroms at 656 nm - Focuser: Helical Focuser - Mounting: Integrated clamshell style with 1/4-20 tapped base - Color: Pearl White with Black and Red accents - Diagonal: B600 Blocking Filter (upgrade)Skill level: Beginner on up OPT Product Number: LS-50THA/B6PT