|
Vignetting will be a problem... the baffle tube diameter on the C6 is only 27mm. On the C8 it's 38mm.
But also bear in mind that the reducer was designed a long time ago for the C8, so slightly different optical parameters, and it doesn't work optimally. The difference in field curvature makes the stars out towards the edges look less than great.
There are alternative reducers that appear to do a better job though... the Optec one for example, and Starizona are prepping a new 0.4x product (for smaller sensors though).
FWIW, the C8 is only 1.x kg heavier... but there may be better options, depending on what targets you're interested in...?
Edit: another FWIW, folk get some pretty amazing images with the ever-popular 130mm f/5 newt...you'd need a coma corrector to go with it too, and note that it needs to be the imaging-compatible version (where the mirror is positioned so it can come to focus with a camera), but they're fairly inexpensive.
|