For starters I am a COMPLETE novice to a telescope , That being said , I purchased a Celestron 8 evolution that came with a lens kit ( 4mm-20mm and a Barlow lens ) I also purchased a Celestron star diagonal, I still need to figure out how to get it aligned but I'll save that for another time, I have been moving it manually and have been able to find the moon in crescent and half stages. My problem is that I can see the moon very clearly by looking through the star diagonal without any lens, but when I put any lens in the star diagonal I am unable to see anything clearly , moon, stars...etc. I originally thought that the OTA may need some alignment from shipping, but since I can see the moon nice and clear with just a star diagonal I figured that was not really my problem, any thoughts or hints on my problem?
Any help would be great
Thanks
Craig