Contents

• Contents
• Introduction
• Technical description

• Optics

• Imaging optics
• Filter

• Broad-band Filter
• Narrow-band Filter
• Circular Variable Filter
• Detector
• Shutter
• Prefocal Optics

• Fabry-Perot etalons
• Polarizer
• Atmospheric dispersion corrector
• Observations

• General remarks
• Orientation of the field of view
• Image scale
• Dead pixels
• Limiting Magnitude
• Sky subtraction
• Integration time
• Spectroscopy
• Polarimetry
• Examples

• Observations of bright and isolated objects
• Observations of crowded fields
• Observations of very faint objects
• Recording flat fields
• Transmission curves of the filters
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