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BS ISO 14490-1:2005
Optics and optical instruments. Test methods for telescopic systems. Test methods for basic characteristics (British Standard)
ISO 14490-1:2005 specifies the test methods for the determination of the following basic characteristics of telescopic systems and observational telescopic instruments:
- angular magnification;
- entrance pupil diameter;
- exit pupil diameter and eye relief;
- angular field of view in the object space;
- angular field of view in the image space;
- angular field of view in the object space for spectacle wearers;
- collimation of the bundle of rays emergent from the eyepiece;
- image rotation;
- closest distance of observation.
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British Standards Institution [bsi]
British Standards Institution [bsi]