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:
— angular magnification (see Clause 4);
— entrance pupil diameter (see Clause 5);
— exit pupil diameter and eye relief (see Clause 6);
— angular field of view in the object space (see Clause 7);
— angular field of view in the image space (see Clause 8);
— angular field of view in the object space for spectacle wearers (see Clause 9);
— collimation of the bundle of rays emergent from the eyepiece (see Clause 10);
— image rotation (see Clause 11);
— closest distance of observation (see Clause 12).