1 Scope
This part of ISO 14490 specifies the test methods for the determination of the following basic characteristics of telescopic systems and observational telescopic instruments:
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— angular magnification (see Clause 4);
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— entrance pupil diameter (see Clause 5);
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— exit pupil diameter and eye relief (see Clause 6);
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— angular field of view in the object space (see Clause 7);
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— angular field of view in the image space (see Clause 8);
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— angular field of view in the object space for spectacle wearers (see Clause 9);
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— collimation of the bundle of rays emergent from the eyepiece (see Clause 10);
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— image rotation (see Clause 11);
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— closest distance of observation (see Clause 12).