P r i m a L u c e L a b i S r l
S p i d e r 2 3 0 u s e r m a n u a l
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Installation: pier
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The first part of the radio telescope to be installed is the pier (
15
) which supports the mount (
13
). The pier must be
installed on a platform. This can be made of wood or concrete, in the latter case you need to verify the correct hori-
zontal level and you can set the pier using special threaded rods to be inserted into the concrete base. Before star-
ting the installation, make sure that the concrete base has completely hardened.
Identify the center of the concrete platform and place the pier
slightly to the West : its axis should be about 20 cm to the West of
the center of the platform. Then put the pier on the outlined point.
Before attaching the pier to the concrete base, it is necessary to
have a rough idea of the North direction (to properly perform the
following mount polar alignment). If you are installing in the dayti-
me (so you cannot see the North Star that indicates the North ), a
compass can help you. At this time it is not necessary to perform a
precision alignment since later, when the pier will be fixed, it will be
possible to adjust the mount position (with a maximum displace-
ment of about 15 degrees). Unscrew the 4 screws around the pier,
remove the red adapter and now connect this under the mount (as
explanations on page 8) and put it all on the column. The correct
direction is the one shown, in the photo at left, by the red line (cor-
responding to the mount polar axis). Rotate the entire mount with
column until the axis pointing North, so mark, for example with a
piece of chalk, the position of the fixing holes to be done ( at the base of the column).
Remove the mount from the pier and then move the pier. Perform in the predetermined points of the concrete base
about three 20mm diameter holes to penetrate for approx. 3/4 the thickness of the concrete platform (for a preli-
minary design of the concrete base you can look at Appendix A).
Insert the threaded rods (not included in the packaging of the radio telescope as they depend on the type of base
that you want to create). Depending on the type of bar installed, you can fix with a two chemical anchoring compo-
nent such as silicone (to be injected with a grease gun) and then enter the pier in the threaded rods.
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p a g e
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