Jaegers 6" f/10 "GJD" OTA Construction - The Dew Shield (test fit to rear objective cell - front)
 

Dew Shield being cut to proper size - 12. (Click to see an enlarged image.)

 
The front view of the Dew Shield test fitted to the rear portion of the objective cell. You can see the inside edge of the rear objective cell looking down the dew shield, which the front lens cell will attach to, making the assembly adjustable/ collimatable.