Stormflagflying

Thank you all so very much for your quick responses and the completeness of the information you have provided me with. I am very impressed (Plus I learnt a new term 'kidney-beaning' and lots of other stuff that I am going to have to look up :-). I suspect I will be a familiar poster for a while as I discover this new fascination. I'm looking forward to it. Happy New Year to you all. Terry

Hi, This is my first post to this group. I'm really looking forward to being part of this community as I take my first step into the stars ? I was fortunate enough to receive a Celestron 130eq Telescope for Christmas (I have had to wait 57 year for my first Telescope but I now have one). The problem I have is that when I insert the 20mm erecting eyepiece and then look through it, the circle that you see (not sure of the correct name) is not full and looks like it is eclipsed at the top for about 40 percent of the circle. If I take it out of the Telescope and look through it I get a full circle and just to confuse matters even more if I insert the 10mm eyepiece into the Telescope then I do get a full circle to view the image on. So I'm not sure if the 20mm erecting lens is faulty? I have raised the issue with Celestron Tech support but so far have had no response so I thought I would post here as I am keen to get out and get using it. Appreciate you thoughts Terry