Solar observation in H-alpha is the most spectacular way to see the suns constantly changing features, including Sunspots, Solar Flares and other features on its surface. This H-Alpha solar telescope has a 40mm aperture with a half-width of < 0.7 Angtröm - B500 blocking filter and Helical focuser.

The LS40THa/B500 is a complete telescope for observing the Sun in H-alpha light, with 40mm free aperture (no central obstruction) and 400mm focal length.

The Etalon filter with mechanical tilt tuning achieves a half-value width of <0.7 Angström and focusing is done using a 1.25" helical focuser. The zenith mirror contains the blocking filter is internally and is equipped with a holder for 1.25 inch eyepieces. This telescope's ease of use and simple setup makes it ideal for getting started with H-Alpha solar observation.

Note: Lunt Solar telescopes come with B500, B600 & B1200 filters with the larger ones providing a wider field of view and less shading on the edges. These telescopes are ideal of visual observation of the Sun however as they have a very small back focus, only cameras with a very sort distance to the sensor can be used for photography.

Features:

• Aperture: 40mm (2-lens lens)
• Focal length: 400mm
• Half-value width: < 0.7 Angström
• Tuning: Mechanical tilt tuning
• Blocking Filter: B500 with 1.25 inch connector
• Focuser: Helical focuser
• Dovetail : Standard GP Vixen
• 1/4-20 thread (standard thread for photo tripods)
• Sun viewfinder included
• Weight: 1.2kg
• Length: 41cm

1. LS40THa Solar Telescope
2. B500 Blocking Filter in Zenith Mirror
3. 1.25 inch Helical focuser
4. GP Vixen rail
5. Sun Viewfinder
6. Operating instructions