M106 NGC4258 LRGB picture

M106/NGC4258 exposure times are LUM=21 5min. plus R,G,B=7,7,7 5min. subs. Meade LX200ACF 16" telescope used. Sub-frames taken with a telescope focal lenght~2m., meaning Optec NextGEN Wide Field 0.5X reducer installed. Astronomik L,R,G and B filters used and due to the degree of light polution locally and from the city of Copenhagen additionally a IDAS LPS 2" filter installed. CCDStack and Adobe Photoshop CS4 applied for picture processing. Dark, flat and bias frames used for calibration of the raw LRGB frames.