Decide between Esprit 80 ED or Evostar 80 ED + Zwo 1600mm pro or 183mm pro

[Adam J]

1 hour ago, Viktiste said:

Thanks Adam.

Newtonian+DSLR is not what I am looking for, I already have that.

This is what James at FLO answered regarding filter size. "You can get away with the 1.25" filters if they are mounted very close to the camera - you'd need the camera mounted next to the filterwheel. It's not a problem, but should you want to rearrange things and move the filters to a different part of the system you may find the 1.25" aren't enough"

Since 1.25" = 31.75mm I assume the 1.25" refers to the diameter of the mounting ring, not the actual filter size, otherwise there would be practically no difference. 

I have decided to go for the 31mm unmounted filters.

Correct,, I wrongly quoted the price for the 100 ED in the OP. 

Yes the filter within a 1.25 inch thread is actually only a clear aperture of between 24mm and 27mm depending on brand.