Telescope laser collimation checker

thingiverse

This is a straightforward tool for verifying whether an affordable laser collimator is properly centered. The device consists of 4 rounded pillars that support the laser collimator. To check its centring, hold the base firmly on a table and observe the laser beam as it hits a distant wall while slowly rotating the collimator around its central axis. If the dot remains relatively stable, the collimator is in good condition; however, if it creates a large arc across the wall, the collimator needs adjustment. It doesn't make sense to invest time in setting up a telescope with an improperly aligned laser collimator.