Perret Opticians
 
We have been opticians for three generations in our family, and our activity is targeted on three areas, optometry, contact lenses and optical instruments.

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INSTRUMENTS

ASTRAL TELESCOPE

BASIC NOTES

  page 14

DIAGRAM SHOWING THE MOUNTING OF THE ACCESSORIES

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bitmap image FOR OBSERVATION OF ASTRONOMIC OBJECTS (NEAR THE ZENITH)  
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 bitmap image FOR SUN OBSERVATION (TAKING APPROPRIATE PRECAUTIONS)

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 bitmap image FOR TERRESTRIAL OBSERVATION

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 bitmap image FOR HIGH-LEVEL MAGNIFICATION

 

 
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