Lunt # 0551322 LS80MT/B1800C Modular H-Alpha Telescope with Crayford Focuser

A complete solar telescope with 80 mm aperture and 560 mm focal length. The internal etalon with a new pressure tuning system allows for a <0.7 Ångström bandwidth.

♦ Special telescope for observing the Sun in H-alpha

♦ With optional accessories also for night sky observing, modular design

♦ 2-element ED optics with FPL53, 80 mm aperture, 560 mm focal length

♦ Observation & photography with very good image quality

♦ Bandwidth less than 0.7 Ångström

♦ Innovative air pressure tuning system

♦ Blocking filter B1800 in star diagonal, no vignetting even with bad tracking

♦ Crayford focuser with 10:1 reduction

♦ With additional accessories also for Ca-K & white light solar observing

♦ Absolutely safe, no danger to the eyes


 

Lunt # 0551322 LS80MT/B1800C Modular H-Alpha Telescope with Crayford 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.

Fine adjustment is achieved with a 2 inch Crayford 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 0551330.

Please note that the optionally available conversion kit 0551330 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 0551330 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.


 

Design:	2-element ED APO refractor with FPL53 element
Aperture:	80 mm (no central obstruction)
Focal length:	560 mm
Bandwidth:	internal Etalon with <0.7 Ångström
Tuning:	Air pressure tuning system Pressure-Tuner
Blocking filter:	B1800 with 1.25" and T2 connection
Focuser:	Crayford with 1/10 reduction
Telescope connection:	Two tube-rings with handle and GP style dovetail bar
Sol-Searcher:	installed inside handle
Length with blocking filter and dew-shield:	62 cm
Length without blocking filter and removed dew-shield:	50 cm
Weight:	4.95 kg

In the box:
♦ LS80MT Multipurpose Telescope
♦ Pressure Tuner
♦ B1800 blocking filter in star-diagonal housing
♦ 2 inch Crayford 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 (0551330) not included!