Making a scope

Started by imgary, 09/30/2002 10:09PM
Posted 09/30/2002 10:09PM Opening Post
I have a 6inch f/8 mirror to mount in a 7 inch tube. The tube is 50 inches in length and 7 inchs ID. I have mounted the mirror cell, that was easy. The cell is mounted inside the tube 1 inch with the mirror it will extend into the tube 1 7/8 inches. I now need to know where to mount the focuser to the tube. The secondary is 1.3 inches MA. Or maybe one can send me to a website that has the formula for the needed measurements. I don't want to punch a hole in the wrong place.