milkyway
the Grattavetro
Rotating table for meniscus mirrors
Environment and tools

A simple rotary table for working mirrors, homemade with some carpentry tools...

by Massimo Marconi
Centrifugal casting (spin casting) epoxy mold for convex core in collapsing refractory (slumping) for meniscus blank.
Science and Technology

The escalation towards the amateur construction of increasingly powerful Newtonian Dobsonian reflector telescopes (thanks to parabolic mirror lenses of ever larger diameter trying to contain their weight) it collides head-on with some technical problems that grow exponentially with respect to the benefits provided.

by Giulio Tiberini
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ALL THAT YOU NEED IN THE MIRROR MAKER ALIAS "GRATTAVETRO"

Making an astronomical mirror is not difficult, if you study the rules of the game well

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

At the curious reader, passing on this blog, it might cross your 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.

TECHNIQUES OF GRATTAVETRO

MEASURE YOUR MIRROR

MORE INFORMATION

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