LUNT LS100MT/R&P Multipurpose Telescope OTA with B1800 Blocking Filter

• Special telescope for observing the Sun in H-alpha
• Also for night sky observing, modular design
• 3-lens ED refractor FPL-53
• 100mm aperture, 714mm focal length (f/7.1)
• Observation & photography with excellent image quality
• Bandwidth less than 0.7 Angstrom
• Big B1800 blocking filter in zenith mirror
• Solid R&P focuser with 10:1 reduction
• Also for Ca-K & White-Light solar observing
• Absolutely safe, no danger to the eyes

Modular 100mm ED Apo telescope for observing & photographing prominences & more at the sun during the day and moon, planets & deep-sky at night.

Modular designed multipurpose telescope, both for observing the sun in the H-alpha wavelength, as well as for night sky observations. Easy conversion between the different applications with a few simple steps. 3-lens apochromatic telescope with FPL-53 glass, 100mm aperture and 714mm focal length - excellent image quality for H-Alpha solar observation and also for observing the starry sky at night.

With innovative air pressure tuning system, good 2 inch (50.8mm) R&P focuser, and B1800 blocking filter.

Solar observing in H-alpha:
The LS100MT/B1800 is a complete telescope for observing the sun in H-alpha light, with 100mm free aperture (no central obstruction) and 714mm focal length. The H-alpha wavelength is the most impressive way to observe the sun, showing protuberances at the sun's edge, filaments and flares on the surface, and much more. An internal Etalon filter achieves a bandwidth of <0.7 Angstrom 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 erosion. A set of collimating lenses installed in the telescope ensures best performance.
Fine adjustment is achieved with a solid 2 inch R&P focuser with 10:1 reduction.
Blocking-filter is the B1800. The B1800 is good for visual solar observing. Also solar imaging is possible by cameras with small sensor chip. We recommend a LS100MT with B1800 blocking-filter by using cameras with middle or large sized sensor chips, at very large sensor chips the optional B3400 blocking-filter.
The star diagonal in which the blocking filter is installed, is equipped as standard 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 LS#0551430) the 3-lens apochromatic refractor can then be used as a normal telescope with 100mm aperture and 714mm focal length for observation and photography of the night sky. The FPL-53 triplet lens offers an outstandingly low colour aberration image. Common 2 inch star diagonals can be used at the high quality R&P focuser of the conversion kit LS#0551430.

Please note that the optionally available conversion kit LS#0551430 is absolutely necessary if the telescope should be used at night.

More applications

With additionally available accessories the LS100MT offers even more possibilities!

• Double-Stack
  The LS100MT telescope can optionally be upgraded with the additionally available double-stack module DSII/SFPT (item number LS#0551395). The DSII system is a internal double-stack module. Thereby a bandwidth of <0.5 Angstrom is achieved for H-alpha solar observation. Therefore much more details on the solar surface will become visible.
• Solar observing in White-Light
  If the H-alpha unit has been removed, of course either a sun 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.
  The conversion kit LS#0551330 is absolutely necessary.
• Solar observing in Ca-K wavelength
  Certainly, the Ca-K filter modules from Lunt Solar Systems can also be used at the LS100MT to observe and photograph super-granulation and other effects visible in this wavelength on the sun.
  The conversion kit LS#0551330 is absolutely necessary.

This makes the LS100MT a completely universal usable telescope!

Technical Data

• 3-lens APO refractor, FPL-53
• Aperture: 100mm (no central obstruction)
• Focal length: 714mm (f/7.1)
• Bandwidth: internal Etalon with <0.7 Angstrom
• Tuning: air pressure tuning system Pressure-Tuner
• Blocking filter: B1800 with 1.25" and T2 connection
• Focuser: R&P with 10:1 reduction
• Two tube-ring with handle
• Sol-Searcher installed inside handle
• Dovetail bar at GP-level for astronomical mounts
• Length with dew-shield: 78cm
• Length with removed dew-shield: 65cm
• Transport case (78x33x23cm)
• Weight: 6.8kg

Scope of Delivery

• LUNT LS100MT Multipurpose Telescope
• Pressure-Tuner
• B1800 blocking filter in star-diagonal housing
• 2 inch R&P focuser with 10:1 reduction
• Tube rings with dovetail bar
• Transport case (78x33x23cm)
• Instruction manual
• Conversion kit for observation of the starry night sky (LS#0551430) NOT included!