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Manual
Conversion Kit
Crayford focuser with Adapter for LS130TH
α
-Telescopes
This conversion kit was specially designed for the LS130THa/B3400 H-Alpha telescope. The conversion kit can
also be used at the LS130THa/B1200 and LS130THa/B1800 telescopes, but it is not necessary there. This
conversion kit is only necessary at the LS130THa/B3400, because at this telescope the blocking filter is fix
installed inside the focuser.
You can exchange easily the H-alpha system in the LS130THa against this focuser. So it is possible to observe
the starry night sky - with the same telescope.
The LS130T then becomes a true 3-lens ED Apo refractor!
But there is more: with the new focuser and a Herschel-Wedge the LS130T can also be used to observe the sun
in white-light, or together with the LS130 Ca-K filter module for solar observing in Calcium-K wavelength!
This focuser with adapter is designed especially for the LS130THa H-alpha telescope, therefore it can only be
used with a LS130THa Solar Telescope.
Warning
Do not remove any filter module from the LS130T telescope while it is pointed at the sun!
Do not point the LS130T at the sun if the new focuser is installed!
There will be no more solar filter inside the LS130T if the new Crayford focuser is installed (see installing
instructions below). So you can use the LS130T as real 3-lens Apo refractor telescope for observing the starry
night sky.
If you want to observe the sun you have to install again the Feather-Touch focuser with the H-alpha module, or
you need a additional solar filter like our Herschel-wedges or LS130 Ca-K filter module.
Installing the new focuser at the LS130THa
The LS130THa is delivered with the H-alpha module assembled into the rear of the telescope tube. This H-alpha
module is recognized as the red housing with the Pressure Tuner assembly attached. The H-alpha module can
be removed by loosening the 3 aluminum thumb screws between the module and the rear of the telescope tube.
The H-alpha module is heavy. Make sure you have firm grip on the module before loosening the thumb screws.
Once the screws are loosened, the H-alpha module will slip back and out of the telescope tube assembly.
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