I had planned to post a review of the ES 20MM 100AFOV eyepiece this evening, Sunday 4-20-14, but this eyepiece would not come to focus in my 16" F4.5 dob, with or without a paracorr in place. It requires far more infocus than anything else I've utilized thus far. I have a lot of eyepieces and this is the first time I've seen it not come to focus. I focused my 20mm meade ultrawide without issues. My other 9mm and 14mm ES 100s also focused this evening without issues. It's too bad since the seeing in front of my home was 4/5 and the clear sky clock was spot on. Mars and Jupiter revealed nice details in my ES 6/7mm eyepiece and I used my CLS filter to good effect for multiple galaxies in Leo, Ursa Major and CV with the above eyepieces.
Unfortunately, I'm going to have to send the ES 20mm eyepiece back...
Unfortunately, I'm going to have to send the ES 20mm eyepiece back...