In the design phase of our astronomical mirror, it is essential to determine the focal length at which you want to reach, since the same focal length depends on the extent of the arrow, ie the depth of the center of the mirror with respect to its edges that we will achieve especially in the roughing phase. The formula for calculating the extent of the arrow is
In the past 1/3 COC, the movement of the mirror on the tool (being the focal reduction) or viceversa (in the process of increase of the focal) They must be made by following a few simple but important rules: the center mirror and the tool at each pass must meet and the straight line virtually drawn from the center of the disc in that
Before starting any mirror processing phase, it is essential to make sure that the edges of both mirror that tool are blunted. This precaution is essential to minimize, during processing, the risk that by the sharp edge of one of the two discs coming off a flake that can slip between the two
Is’ the day “zero”, one in which it is decided to start the processing of its first mirror. Everything's ready: a transparent glass disk is lying on her pretty stable support, restrained but not too much by three wooden dowels. We seize another glass disc uncut and, coarse carborundum hand
Aspect not to be overlooked during the whole manufacturing process is cleaning the workplace. This need, that in each processing of materials can be an important aspect not to be underestimated, here becomes crucial, since we are dealing with different abrasive grits. What it makes indispensable a perfect cleaning
