Super Plössl 56
The first one is very useful if you want to search a target and align it on the scope. It is also useful for observing large deep sky objects like M27, offering a comfortable field of view and high contrast with its 63 magnification. Unfortunately that kind of eyepiece suffers from vignetting. In fact, it remains quite difficult to see through this eyepiece if you are not in the right axe. This phenomena becomes critical if you use it in daylight. I made several observations of Venus and Mercury and according to me this kind of eyepiece is not made for such an observation. Another problem with such a eyepiece is its weight. In fact these 2" barrel size are very heavy for an eyepiece and it's necessary to balance your telescope before and after using it.