Vingo,
according to Rogers reckoning, Mag 17 would be the current limit in the ED80 using 180 second exposures. Dunno how further it will go in the 12". Might be able to push it to Mag 18+. Longer exposures will take it deeper and deeper, but stars will really bloat out and noise will be overpowering. As soon as the weather clears up again tomorrow night I'll take some loooong exposures thru the ED80 and see what we get.
Once the peltier cooling & Amp-off unit is fitted it will go deeper
