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Message: <blockquote data-quote="ceasar" data-source="post: 3553503" data-attributes="member: 26155">I can't help you with the star test. I don't know if that in itself is sufficient to determine if your SE was out of collimation but I am sure that there are others here who can give you advice on that.My experience with collimation problems have been of the readily evident variety; like seeing two telephone poles where only one exists and almost everybody would see that kind of problem.   On the SEs that problem would be fixed by the technician by adjusting the eccentric rings located near the objective lenses. May I ask if your wife might have been having partial blackouts in the view when she used your SE?  Some people who used the SEs were affected by these blackouts and found the SE impossible to use while many others were not affected by them.  The blackouts were called "kidney beaning" because they were shaped somewhat like a kidney bean.  (There is a technical definition for this optical problem which I have forgotten.  Perhaps someone will volunteer it?)The blackouts would disappear if you held the binocular braced up against and just under your eyebrows and tilted it very slightly upwards.  It became known as the MOLCET technique.  It is an acronym for "Mooreorless Ceasar's Eyebrow Technique" named after Steve Moore and myself who used the SE in that manner to make the blackouts disappear. Bob</blockquote>