80mm H-alpha Telescope B1800 Crayford focuser and PressureTuner
Complete H-alpha Solar Telescope with 80mm aperture and <0.7 Angstrom bandwidth. With new air-pressure tuning system, zoom eyepiece, Sol-Searcher, and B1800 Blocking Filter, that provides a smaller vignetting for imaging!
- H-alpha Telescope with internal Etalon and 80mm Aperture
- Pressure Tuner system
- B1800 blocking filter in star-diagonal
- Crayford focuser
- Tube Ring with 1/4"-20 connection and dovetail plate
- LUNT zoom eyepiece
- transport case
The LS80THa is a complete Solar Telescope, a precision aligned ED refractor with a fully un-obstructed 80 mm optical aperture and 560 mm focal length. An internal etalon with new air-pressure tuning adjustment allows for a <0.7 Angstrom bandwidth. This "Pressure Tuner" system allows a better Etalon adjustment than other systems. The “Pressure Tuner” system adapted the Etalon to varying altitudes and atmospheric pressures for always optimal performance.
Blocking Filter is the B1800, that provides a smaller vignetting for imaging. 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: 80 mm (ED refractor, unobstructed)
Focal length: 560 mm
Bandwidth: internal Etalon with <0,7 Angstrom
Tuning: air-pressure tuning system
Blocking Filter: B1800 with 1.25" and T2 connection
Focuser: Crayford-style with 10:1 reduction
Weight: 4 kg
The telescope is upgradeable with the new DSII double-stack system. The optional DSII is a internal double stack module with "Pressure Tuner", that provides a bandwidth <0.5 Angstrom. In addition to the "Pressure Tuner" has the DSII module the advantage that there are no more Energy-Rejection-Filter installed, unlike front-mounted double-stack filters. The ERF are allready in the telescope. Therefore the sun's image is brighter and prominences can be better observed than with conventional double-stack systems.