Jaegers 6" f/10 "GJD" OTA Construction - OTA Assembly (making spacer template - step 1)

 

Making of template for use in installing aluminum spacers Step One - 14 (Click to see an enlarged image.)

 

Before mounting the 'front lens cell' to the 'rear lens cell' at the objective end of the OTA, the Jaeger 6" f/10 objective will have to be mounted inside of the front lens cell. But, I can not do this step until I properly space the crown and flint elements with evenly spaced aluminum tabs; a total of six (6). Starting with this page, I will describe the steps I took to do this.

The tools I will be using (not all are seen in the photo) for this process are a 180-degrees compass w/ straight-edge, a rule, a circle compass w/ pen or pencil, additional pen or pencil and a pair of scissors. And for those visually impaired to do close-up work, a pair of readers.

BTW - Once I have finished using the template for placement of the aluminum spacer tabs onto the flint element, it will serve another important purpose that I will reveal afterwards.

Step 1 --- Making the template begins with drawing a 6.1" inch circle onto a sheet of copier paper using the circle compass. This circle will represent the true diameter of the unmounted objective lens.