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.
F
rench
German
INSTRUMENTS
ASTRAL TELESCOPE
page 1
Table of Contents
Alignment of the Finder
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FOCUSING OF THE TELESCOPE AND ALIGNMENT OF THE FINDER
Oculars and Magnification
Use of Altazimuth Mounting
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MOVEMENT OF THE TELESCOPE
Use of Equatorial Mounting
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balance the instrument
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equatorial telescope can be regulated
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RIGHT ASCENSION
Ground Use
Astronomic Use
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HOW TO AIM THE TELESCOPE AT CELESTIAL OBJECTS
How to Aim at Celestial Objects
The Sun and The Moon
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THE SUN
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THE MOON
Other Celestial Objects
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THE PLANETS
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Mercury
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Uranus and Neptune
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Pluto
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VENUS
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Comets
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THE STARS
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STELLAR MASSES
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NEBULAE AND GALAXIES
Photographic Use
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DIRECT FOCUS PHOTOGRAPHY
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PARALLEL PHOTOGRAPHY
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OCULAR PROJECTION PHOTOGRAPHY
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FOCUSING WITH THE CAMERA
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ASTROPHOTOGRAPHY
Accessories
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Sun Filter
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Solar prism
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Mylar Sun Filter
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Moon Filter
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Nebula Filter
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KIT 4 coloured filters
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Automatic Tracking
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STEP MOTOR
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Control 12
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Sun Screen
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Image Rectification
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Motorized focusing
Advice and Maintenance
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ADVICE FOR SUCCESSFUL OBSERVATION
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MAINTENANCE OF THE TELESCOPE
Copyright
©
[200
8
[Informoptic CH-1272 Genolier/VD Switzerland ]. All rights reserved