Originally Posted by AG Hybrid
My Semi Apo filter took a lot of light away from my ES 102 achro. Also turned stars that already had no violet fringe into vomit color. I just bought a 6" Mak instead for the high power views and use the 4" for low power rich field stuff that is not really affected by CA.
A rather expensive filter that just sits in my eyepiece case at the moment. I don't foresee myself picking up a big achro anymore now that I have a Mak.
I to Adrian! And those big achros have one colour of out of focus in violet/blue light as Matt has stated also; ergo it cannot be super sharp as a Maksutov is.
PS: And hope you are enjoying your Mak.Dont forget its great for binaries too!