I was experimenting with combining Barnard 33 that I took last year with my 70mm Meade using an Lpro and LEnhanced filter and combining them with 54 x 300s subs that I took last night through my Skywatcher Esprit 120 using an LExtreme filter.  I did the combination in Astropixelprocesser.  The final clipped because the original photo from last year was done with out flats...very upsetting as I had two nights into it and all the flats I took went Poof into the digital netherworld.