Telescope Collimation - Primary Mirror Blank 114mm

cults3d

Mirror blank for doing laser collimation of your secondary. It is, nearly, impossible to laser align your secondary with the primary installed. The primary WILL change the centering of the laser dot. By using this blank in place of your primary, you can be assured that the primary is not altering the centering. Once your secondary is centered on this blank, you're ready to re-install your primary mirror, and finish your primary collimation. Things to note: The focal distance, of the secondary must be centered before using this. THIS ITEM REQUIRES DISASSEMBLY OF THE TELESCOPE. I AM NOT RESPONSIBLE IF YOU DAMAGE YOUR TELESCOPE MIRROR. ONLY USE IF YOU ARE COMFORTABLE REMOVING YOUR PRIMARY MIRROR.