Hadley - Collimation Ring

prusaprinters

<p>Ring for Hadley's main mirror, so you can quickly find a 20cm centered circle for collimation.&nbsp;</p><p>Intended to be used with the <a href="https://www.printables.com/model/257372-hadley-telescope-primary-mirror-114mm-installation">Primary Mirror (114mm) Installation Support </a>by <a href="https://www.printables.com/social/119334-fortinmike/">fortinmike</a><br>as well as the <a href="https://www.printables.com/model/256728-cheshire-collimation-eyepiece-for-reflector-telesc">Cheshire Collimation Eyepiece</a> by <a href="https://www.printables.com/social/119334-fortinmike/">fortinmike</a>&nbsp;</p><p>Instructions:</p><p>With the telescope fully assembled…</p><ol><li>Place the <a href="https://www.printables.com/model/257372-hadley-telescope-primary-mirror-114mm-installation">mirror installation support ring </a>so it is properly seated around the sides of the primary mirror.&nbsp;</li><li>Place the Collimation Ring inside the mirror installation support ring. it's snug, so make sure it is all the way down. (gently, don't scratch your mirror)</li><li>Install the <a href="https://www.printables.com/model/256728-cheshire-collimation-eyepiece-for-reflector-telesc">Cheshire Collimation Eyepiece </a>into focuser.</li><li>Shine a light into the side of the eyepiece while looking into the pinhole and you should see it in the primary mirror.</li><li>Adjust the Collimation screws at the back of the telescope until the center dot of the eye piece is in the middle of the center circle of the Collimation Ring.</li></ol><p>&nbsp;</p><p>A great video on collimation (start at about 06:05 for the relevant bits):</p><figure class="media"><oembed url="https://youtu.be/KADpZ_XZkS8?t=365"></oembed></figure><p>&nbsp;</p>