Hadley Telescope Primary Mirror Collimation Knob

prusaprinters

<p>When the time comes to install your primary mirror on the Hadley LTA, there are multiple options. Here's how I assembled mine:</p><p><img src="https://media.printables.com/media/prints/315378/rich_content/a2747c01-369c-4d3d-968f-843229ea2ef2/small1x.png#%7B%22uuid%22%3A%22ea1f8fdd-1e67-4b34-abdc-83ee084baee2%22%2C%22w%22%3A901%2C%22h%22%3A436%7D"></p><p>This is a section view of the primary mirror in its cell (left) and the LTA (top and right), with the rear of the scope being on the right. The red part is a lock nut, glued onto the cell prior to glueing the mirror on the cell with silicone. The knob has an embedded nut (inserted with a print pause at the appropriate layer) and is fully screwed onto the screw before threading said screw into the whole thing up to the lock nut. Once the screw is in place, simply rotate the knob to retract the screw, compressing the spring and changing the angle of the primary mirror.</p><h3>Printing Instructions</h3><p>You must insert a print pause at the appropriate layer to insert a standard nut into the knob. Use the provided <i>3mf</i> as a starting point or setup your own.</p>