100% Do-It-Yourself

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This site contains a few tips to make astronomical instruments and to watch the sky both night and day, at a low cost.

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The equatorial table : take pictures of the nightsky without a telescope

The hydraulic focusing system : focus the image without vibration

Stepper motor electronic controls : pilot a 6 wire motor

Hydraulic drive : use a stepper motor and syringes to drive your equatorial table

Some advice to build a telescope : take up the challenge

Beginners' corner

Links and Bibliography

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