Lunt LS60THaDS50/B600C H-alpha solar telescope
Complete H-alpha solar telescope with 60mm aperture and additional 50mm double-stack filter system. The telescope can be used with <0.75 Angstrom bandwidth or with <0.55 Angstrom bandwidth.
With B600 blocking-filter, and Crayford focuser.
This telescope will be delivered with two matched Etalons, a internal Etalon and a external. The LS60THaDS50 could be used only with the internal H-alpha filter at <0.75 Angstrom and a aperture of 60mm, or together with the front mounted external H-alpha filter at <0.55 Angstrom bandwidth and 50mm aperture.
By reducing the bandwidth from estimated 0.75 Angstrom to 0.5 Angstrom more details on the solar surface will become visible. Adding a second Etalon to an existing Etalon is not quite as simple as it may seem. Both Etalons need to be brought on line (matched) and both need to be adjustable (Tuning) such that all ghosts images could be eliminated. Ideally the transmission curves should overlap perfectly when on band to provide for the best possible resolution and contrast. Both etalons in this system will be matched at the factory in order to provide a system that is both optimized for performance and the elimination of ghosting.
Blocking-filter is the B600. The B600 is good for visual solar observing. Also solar imaging is possible by cameras with small CCD chip. We recommend a LS60THa with B1200 blocking-filter by using cameras with middle or large sized CCD chips.
The star diagonal in which the blocking filter is installed, is equipped as standard for 1.25" eyepieces and with a T2 camera connection.
Fine adjustment is achieved with a Crayford style focuser with 10:1 reduction.
Aperture: 60mm or 50mm
Focal length: 500mm
Bandwidth: <0.75 Angstrom or <0.55 Angstrom
Tuning: tiltable Etalons
Blocking-filter: B600 with 1.25" and T2 connection
Focuser: Crayford-style with 10:1 reduction
Tube-ring with 1/4-20 tapped base (standard thread for photo-tripods)
SCOPE OF DELIVERY
LS60THa H-alpha telescope with internal Etalon, and 60mm aperture
External 50mm double-stack Etalon LS50FHa
B600 blocking-filter in star-diagonal
2" Crayford focuser
Tube ring with 1/4-20 connection for mounting on photo-tripods
- Optical Design
- Hydrogen Alpha (HA)
- Focal Length
- 400 mm
- Optical Tube Length (mm)
- 13 inch