For amateur astronomers who would like to build their own telescopes, Spacewalk Telescopes offers a number of parts that are needed for such a project.

1) Teflon Pads


The proven combination of ebony and teflon is generally used for the contact surfaces of the rocker box and side bearings, as this pairing has a particularly low breakaway torque and therefore ensures smooth and gentle movement of the telescope.

The laser-cut teflon pads are 3 mm thick and have holes for easy installation.

The set includes the following Teflon pads: 3 pcs. measuring 60x40 mm, 4 pcs. measuring 65x14 mm, and 4 pcs. measuring 30x20 mm for the lateral guidance of the side bearings.



2) Secondary Spider


A spider is required for the construction of the secondary cage, so that the secondary mirror and its mount can be attached. The spider has an eccentric design and therefore has a very high torsional rigidity.

The spider arms are laser-cut from 0.8 mm to 1.0 mm thick brass sheet and have cutouts to reduce weight. Another advantage of such a thin spider is, that spikes are barely visible on brighter stars. The two 28 mm wide arms are connected in the middle by a rectangular profile (30 x 20 mm), which has a central hole for mounting the secondary mirror holder. Holes at the end of the spider allow the included M6x40 eye bolts to be mounted, which can be used to attach the spider inside the secondary cage.

The spider is available for mirror diameters of 300 mm, 400 mm, and 500 mm and is delivered unbent for packaging reasons so that it can be shipped safely in a long cardboard box.



3) Fangspiegelhalterung


The secondary mirror mounts from Spacewalk Telescopes are available for diameters (short axis) of 80–90 mm, 100–110 mm, and 120–130 mm and are laser-cut from 5 mm thick POM.

In addition to a central M6 screw, the mounts feature three adjustment screws that are held in position by strong springs. Three lock screws ensure that the adjustment is maintained.

The secondary mirror mounts are compatible with the spiders offered.