Here is a shot of M101 taken over 3 nights finished up last night..
3hr 36min total exposure time, 180sec subs @ iso800, 15 darks, 15 bias, 15 flats each night.
Using my iEXOS-100, AT80ED and Canon XSi 450D.
ES iEXOS-100 PMC-Eight with ES Heavy Duty ST3 tripod & Azimuth Adjuster
ES USB Power Bank
Astro-Tech 0.8 Field Flattener/Reducer.
Meade Infinity ST80 with Lunt Solar dual speed crayford focuser.
Meade Polaris 90 with GSO dual speed crayford focuser.
Meade Polaris 130 with ScopeStuff 1.25 crayford focuser.
ZWO ASI120mc-s, Canon XSi 450d.
ZWO ASI120mm-mini & ZWO 30mm f/4 Mini Guide Scope
EQ2 Mount with Orion EQ-2M RA Drive.
AZ3 Alt-Azimuth Mount.