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Lunt 60mm H-alpha Solar Telescope & 60mm DS Filter - LS60THaDS60/B1200FT
[LSS_LS60THaDS60/B1200FT]

Prijs: 5.820,00 EUR

 
Product Details

Lunt 60mm H-alpha Solar Telescopes with 60mm Double Stack Filter - LS60THaDS60/ B1200FT

Complete H-alpha Solar Telescope with 60mm aperture and a additional 60mm Double-Stacked Etalon system. The telescope can be used with <0.75 Angstrom bandwidth or with <0.55 Angstrom bandwidth, both with 60mm free aperture! With B1200 Blocking Filter, that provides a smaller vignetting for imaging, and Starlight Instruments Feather Touch focuser.

This telescope will be delivered with two matched Etalons, a internal one and a external. The LS60THaDS60 could be used only with the internal H-alpha filter at <0.75 Angstrom, or together with the front mounted external H-alpha filter at <0.55 Angstrom bandwidth, with 60mm free aperture.

The best views of the Sun are undoubtedly seen thru a dual etalon system. The reduction in bandwidth from an estimated 0.75 Angstrom to 0.5 Angstrom just seem to bring the Sun's surface to life. 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 are 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.

The focal length of the telescope is 500mm. The star diagonal in which the blocking filter is installed, is equipped as standard for 1.25" eyepieces and with a T2 camera connection. The B1200 Blocking Filter provides a smaller vignetting for imaging. Fine adjustment is achieved with a Starlight Instruments 2" Feather Touch focuser with 10:1 reduction.

Technical data:
?Aperture: 60 mm
?Focal length: 500 mm
?Bandwidth: <0.75 Angstrom or <0.55 Angstrom
?Tuning: tiltable Etalons
?Blocking Filter: B1200 with 1.25" and T2 connection
?Focuser: Starlight Instruments Feather Touch with 10:1 reduction
?Weight: 3.7 kg
?Length: 47 cm

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