Lunt LS80MT/B1800RP Modular H-Alpha Telescope with Rack and Pinion Focuser

Lunt LS80MT/B1800RP Modular H-Alpha Telescope with Rack and Pinion Focuser

The LS80MT/B1800 is a complete telescope for observing the sun in H-alpha light, with 80 mm clear aperture (no central obstruction) and 560 mm focal length. The H-alpha wavelength is the most impressive spectral range to observe the sun, showing prominences at the sun´s edge, filaments and flares on the surface, and much more.

An internal etalon filter achieves a bandwidth of <0.7 Ångström with the innovative air pressure tuning system Pressure-Tuner. Tuning is done by slightly changing the air pressure in a pressure chamber inside the telescope. This changes the refractive index of the air, making it easy to tune to the H-alpha line. The pressure tuner guarantees a homogeneous image, without central obstruction, and a permanently protected etalon without wear. A set of collimating lenses installed in the telescope ensures best performance.

Focusing is achieved with a 2 inch rack and pinion focuser with 10:1 reduction.

Blocking-filter is the B1800. The B1800 is very good for visual solar observing and also for photography.
The star diagonal in which the blocking filter is installed is equipped as standard with a receptacle for 1.25 inch eyepieces and with a T2 camera connection.

Observing the starry night sky:

The H-Alpha Etalon system can be removed from the telescope in a few easy steps thanks to its modular design. With the additionally available conversion kit (item number 0551330) the 2-element ED refractor can then be used as a normal telescope with 80 mm aperture and 560 mm focal length for observation and photography of the night sky. The FPL53 doublet lens offers an low colour aberration image. Common 2 inch star diagonals can be used at the high quality R&P focuser of the conversion kit.

Please note that the optionally available conversion kit is absolutely necessary if the telescope should be used at night.

More applications:

With additionally available accessories the LS80MT offers even more possibilities!

Double-Stack: The LS80MT telescope can optionally be upgraded with the additionally available double-stack module DSII/SFPT (item number 0551395). The DSII system is an internal double-stack module. Thereby a bandwidth of <0.5 Ångström is achieved for H-alpha solar observation. Therefore much more details on the solar surface will become visible.

Solar observing in white light: When the H-alpha unit has been removed and the conversion kit is installed, of course either a solar filter to be installed in front of the objective, or a Herschel wedge at the focuser can be used to observe the sunspots in white light.

Solar observing in Ca-K wavelength: Certainly, the Ca-K filter modules from Lunt Solar Systems can also be used at the LS80MT to observe and photograph supergranulation and other effects visible in this wavelength on the sun.

Astrophotographic results obtained with this telescope on Astrobin

Here you can find some astrophotographs made with this telescope model: Link to Astrobin

LS80MT Multipurpose Telescope

Pressure Tuner

B1800 blocking filter in star-diagonal housing

2 inch rack and pinion focuser with 10:1 reduction

Tube rings with dovetail bar and sol-searcher

Transport case (78x33x23 cm)

Instruction manual

Conversion kit for observation of the starry night sky not included!

Safety informations: PDF Download