BS ISO 14490-1:2005

This standard BS ISO 14490-1:2005 Optics and optical instruments. Test methods for telescopic systems is classified in these ICS categories:

• 37.020 Optical equipment

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).