At the prompting of the many wise contributors to BF I have slowly become more adept at doing the star test, but not as good at interpretation of the results. Seems most web sites have examples for telescopes and not bins. What does it mean if one barrel has a distinct horizontal line that is not black but faint greenish in color across the 'airy disc'. At focus the star is a dot and perfect circle close-to-infinity with one outer ring. I seem to recall this is from the roof-prisms line.
Statesat,
Are you "boosting" the magnification with a second telescope behind the eyepieces, or using the binocular in the natural way?
Ron
Using a 3x scope to boost the image, is that enough?