ALL THAT YOU NEED IN THE MIRROR MAKER ALIAS "GRATTAVETRO"

The manufacture of a mirror for astronomical use is not difficult, if you study well the few rules of the game !

LOOK IN THE MIND (AND IN THE HEART) A GRATTAVETRO

At the curious reader, passing on this blog, could pass a question for the mind ...

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WHY BUILD AUTO-MIRROR AND TELESCOPE

The reasons are differents and subjective, and an outright answer can not be given ...

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OBSERVE THE UNIVERSE, QUESTION OF NANOMETERS

In "scratching the glass" the most important of all reference number is 68.75 nanometers high.

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