From my other reviews of various Naglers, Ultra wide angles and some very good Panoptics, I decided to include this eyepiece as well, as it has been a blessing to own, use and must for my collection...I currently use a Tak Mewlon 250 but my 55 has seen various other scopes including refractors ( TOA & FS series Taks )and some very large SCTs( C-14 & Meade 14 SCT )...My conclusion is this...I use the TV 55 when I need an outstanding low power eyepiece for very faint objects with exceptional optical quality, which by far the TV 55 Plossl is a Tried and True deep space performer !