Darks can't be recycled from session to session (well you can, but you shouldn't). Conditions are different each night: temperature, humidity, pollution, seeing, etc..
Taking darks is really really simple, especially for EAA where you don't need long exposure times. For me it's just 1 minute (same time as the total exposure I want for my captures).
I usually take the darks after 30 minutes or even more with the tube out and the camera connected, in order to stabilize both the mirror and the camera to the outside conditions. After that time, I cover the scope for 1 minute and take the darks. That easy :-)
Edited by MikeGS, 09 July 2019 - 02:57 AM.