are these the same as a fully IR modified camera or somewhere in between?
you know the type for taking those cool mid day shots where all the trees and crass goes white
Nope. This camera still blocks IR, but the filter is a different one which passes more deep visible red which is desired for astronomical use.
Canon 1D, 300D IR, 450D full spectrum, 600D, 5D2, 7D, EF 35/2, 50/1.8, 85/1.8, 135/2+SF, 70-300L, 100-400L
EF-S 15-85, TS-E 24, MP-E 65, Zeiss 50/2 macro, Sigma 150 macro, 120-300/2.8 OS, Samyang 8mm fisheye