[casstony]

I've recently started taking a few pics with a dslr and I'm after a bit of advice.
I've been using a Canon 600D to take 30 second exposures at ISO 3200 through an Esprit 80. Should I be using different settings?

Also how much less noisy/more sensitive are the newer cameras like the 6D and A7S? Are they dramatically better?

I'm thinking of getting a Lacerta stand alone autoguider as I'm reluctant to add a laptop and CCD camera - prefer the dslr simplicity at the moment.