Hi Labros and welcome , Here is a photo of my 150mm f8 refractor and its a great scope ,,,BUT
, you have to realise these are a BIG!!! scope and need a decent mount and tripod to hold them , the EQ5 that they come with is to small to hold a tube of that size , sorry to say .
You need at the minium a HEQ5 like mine here , or better an EQ6 .
But them the tripod legs are to short for such a long tube
so you need a longer one to view at the zenith comfortably . This makes a very BIG package that takes lots to set up and more importantly take down at 1am in the morning ,
.
This is my opinion .
Go for an 8 inch Dob as the next step up from your 130mm , sell it and go the Dob way .
Brian.