hi robocat
your focuser has the ability to change between 2"eyepieces and 1 1/14" eyepieces...your first picture is just of the focuser put the larger adapter in tighten the grub screws and take out the end cap,then place in your 2"eyepiece and tighten the 2 grub screws know the 2"eyepiece is ready to use
know for 1 1/4"eyepieces remove eyepiece and adapter there should be another adapter same size as last with a smaller opening at top to take 1 1/4"eyepieces do the same with this adapter as the 2"one and you should be right to go..
any problems please feel free to post...
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