I am interested in a comparison or these 3 eyepieces and anyone that has had a chance to view through them side by side or even particular aspects about one of them that you have or have looked through and liked or disliked. I currently own the Pentax and TMB and have had only minor opportunities to do an A-B comparison of the two. I have been hoping for a chance to get a small group of experienced observers together and to do a controlled match up hoping to bring a 41 Pan into the mix as well. Since I have had the two I possess, observing times have been few and far between this winter and I have not wanted to spend a lot of time doing equipment comparisons, but preferring to actually observe. So far, I have not been able to discern a difference optically between the two. Each has some features to them that I like. I prefer the Pentax when star hopping with my dob. I wear glasses normally and need to keep them on when I am constantly looking up at the sky then down through the dob. The Pentax has the necessary eye relief to do this. I like the TMB eyecup because it is large and you seem to be able to get your eye down into it and really block out all peripheral light. It is also noticeably lighter than the Pentax. If I am using my goto sct, I will take off my glasses and set them aside preferring to view without them and then I go with the TMB. I really want to get a group comparison going to see if anyone can tell an optical difference. One of the best features of the TMB is the price, it being about $200 less than the Pentax. I am not sure the current price of the Nagler. I have a friend who says he has done a comparison between the 30 Pentax and the 31 Nagler and putting aside the afov issue felt the Pentax had an obvious edge over the grenade in contrast. He is one I want to include in the comparison of the 40s. Anyway, I just want to hear what others may have experienced with these eyepieces or ask me other questions about the two I have compared.
DanL
DanL
