Quote:
Originally Posted by Travellingwave
Yes , to be honest focus lever doesn’t seem to have a huge effect , it’s also quite stiff , beam centering controls seem to work ok though
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An important point: do you have your ion trap magnet close to the base of the tube (pin connector)? If it's too close to the focusing magnet, or touching it, the two magnets/fields will interact, which can be a problem, especially because your tube is mounted somewhat sideways, i.e., the tube's EHT anode is facing the EHT shield, instead of facing up / closer to vertical.