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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;
Select the subscription format that is right for you. Table with 13 rows and 3 columns, identifies features available and not available for the two different subscription formats - CSA Advantage TM and CSA OnDemand TM