This mosaic was taken during february-march , processed in april 2011 in village Khlepcha near Kiev, Ukraine. Equipment: Telescope SW 25012P 1200 mm f/5, Mount WS-180, camera QSI-583wsg, Baader MPCC. Off-axis guidecamera Orion SSAG. Ha and LRGB filter set Astronomik. M81: H-a: 7*15 min. bin 2x2, L: 11*10 min+12*5 min+ 12*2.5 min, bin 1x1, R: 8*450 s.. bin 2x2, G: 5*450 s. bin 2x2 M82: H-a: 14*15 min., bin. 1x1, L: 9*10 min., bin 1x1 , RGB: 9*10 min., bin.2x2 in each filter. Processed: Pixinsight, Fitstacker, Photoshop CS5 North at left