[skytry (Peter)]

hi All,
I require help please,
using my 102mm refractor and looking through a 50mm 2" eyepiece,
using the micro focus, the bright stars I focus on have a V shape
to the edge in the eyepiece,
is this coma?, I read under 150 magnification, it is possible,
with say 15mm and over 150 magnification, is this somewhat eliminated,

am I right?,

regards,
Peter.