How to adjust EMS-BINO


This photo shows the view you are watching distant TV antenna through an EMS BINO.
The two images seems to be perfectly merged into one, and the view is thrillingly real and beautiful.
You must think the adjustment was perfect,but the next check will prove if your adjustment was perfect or not.




left exit pupil (ramsden circle) right exit pupil (ramsden circle)



Draw back your eyes gradually from the eyepoints of the eyepieces, never shifting your face laterally from the original eyes.
If you see each of the objects is in the same position of the exit pupils, you can say that you did the perfect adjustment.



left exit pupil (ramsden circle) right exit pupil (ramsden circle)


In most cases of the beginners, the situation will like the above photos or worse.
In such a case, shift the right-eye image operating the adjustment knob on the EMS until making the same condition of the former photos.



The right image shifted vertically widely The right image shifted laterally widely


As long as your eyes are kept to be pararell to eachother, the adjustment should be minimum to reach the perfect position.
The left photo shows the movement of the right-eye image when the Y-adjustment widely operated. The left photo for the X-adjustment widely operated.
The photos show how harmful it is the wrong usage of the X-Y adjustment device of the EMS.
You must note that the excessive operation of the adjustment devise will cause a bad effect of image inclinations. (The dark images in center are the ones of the left-eye.)



New Focuser

1.Loosen the clamp screw(yellow arrow) , and pull or push the adjustment knob for the course slide focus.

2.Tighten the clamp screw and turn the knob for the fine adjustment.




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