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Ls80Tha 0.7A Pressure Tuner B1200 View larger

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Ls80Tha 0.7A Pressure Tuner B1200

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Ls80Tha 0.7A Pressure Tuner B1200



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4 445,00 €

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The LS80THa and 'a solar telescope complete, a refractor ED with 80 mm diameter and 560 mm focal length. An internal Etalon with the device tuning air-pressure allows a bandwidth of less than 0.7 Angstroms . This system Pressure Tuner allows better adjustment than other systems. The system Pressure Tuner adapted the Etalon to varying altitudes and atmospheric pressures for always getting the best possible performance.

The filter locking and 'the B1200. The diagonal in which the blocking filter and' installed accepts eyepieces 31.8 mm and has a T2 photographs.

The focus is through a Crayford focuser in double speed '.


  • Diameter: 80 mm (refractor ED)
  • Focal length: 560 mm
  • Bandwidth: <0.7 Angstrom
  • Tuning: air-pressure tuning system
  • Filter lock: B1200 attack with 31.8 mm and T2
  • Focuser: Crayford with reduction 10: 1
  • Weight: 4 kg

    LS80THa < p> For the advanced solar observer, Lunt offers this ED refractor with a diameter of 80mm and 560mm focal length. This H-alpha telescope comes with the device tuning "" Pressure Tuner "" whereby the internal Etalon achieves a bandwidth of less than 0.7 Angstrom. This telescope has both the attack 1/4 inch for insertion on photographic tripods that a bar dovetail for frames astronomical. They also include the seeker Sol-Searcher, a zoom eyepiece and a hard carrying case.

    Like the more small LS60THa, he can be equipped with different filters blocking (B1200 or B1800).

    LS60THa with Pressure Tuner

    These telescopes are now also available with the new air-pressure tuning system. This allows a better regolazioene dell'Etalon compared to other systems by reducing the bandwidth to values ​​lower than 0.7 A.

    The atmospheric pressure varies depending on whether you are, for example, at sea level or in the mountains. Unfortunately the filters Etalon respond to these changes and the wavelength that is allowed to pass from the filter varies as a function of atmospheric pressure. This variation is very small but at bandwidths of less than 1 Angstrom is clearly visible. If the filter is not perfectly tuned to hear the H-alpha wavelength, the image loses detail and other features like bumps or granules are not more visible.

    To make this adjustment proceed usually mechanically but in quantities of a few Angstroms this is very difficult to obtain. The new system Pressure Tuner Lunt Solar Systems works differently: the air pressure in the filter is adjusted to 100% to the external pressure. Then the air around all'Etalon Can be compressed or expanded by the tuning system to change the pressure between the surfaces. This allows the surface dell'Etalon to remain at the same angle to the light waves Pern changing the refractive index of the air in the camera: you get cosଠeffect of tuning of + or - 0.4 Angstrom. The patented Pressure Tuner of Lunt Solar Systems is also called True Doppler Tuning and achieves much better results than conventional tuning mechanisms. "

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