New! The large mirrors that are fused “Techno-Fusion” style in Borosilicate (pyrex) are now entirely made here at Optiques Fullum.
Since Fall 2011, we have a 10’ x 10’ oven at the workshop that enables us to fuse our own 16 to 100-inch diameter mirrors!!! The fusing process was developed with the help of Dr. Jeff Viens from the Laval University, who specializes in the fusing of glass product.
Tests began in the Fall of 2011 and are now completed and very conclusive. The prototypes are now available on the international market. In four months of production, we successfully fused more than 6 mirrors from 16 to 61 inches !!!
We also built equipment to groove, polish and aluminize these large mirrors right here.
The fusing process makes it possible for us to build very light mirrors given their diameter, for an increased rigidity. The fact that the mirror central structure is open, the ventilation process and the gauging of the temperature of the mirror are very easy. You only need to install lateral ventilators that blow between the plates and that’s it! The mirror becomes in thermal balance within +/-20 minutes and will stay stable during your entire observation session.
A cell at multiple floating points (27 to 54) is necessary to support the mirror, since the convex back is of the same amplitude as the concave of the optical face.
We believe this new type of mirror will revolutionize the world of astronomy, whether amateur or professional.