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I revisited this after a week break, also managed to get significantly more imaging time in last Monday and Tuesday nights I got a lot of great advice from my original post, I used a new tool as I couldn't get GradX to work effectively on the high gradients I get from light pollution in my location so I downloaded AstroFlat Pro plugin for PS http://www.prodigitalsoftware.com/AstroFlatPro1_News.html AstroFlat Pro worked really well on L, mergedRGB and Ha removing gradient that was on my original post So below is the result of a lot more data and different processing, I tried two different methods to add in Ha, one replacing the RED channel with a mix of R + Ha and one that put the Ha as a RED channel layer Below is a Ha included as Red channel layer with a Lighten blend (http://bf-astro.com/tutorial/addHa.htm) L - 1.5hr , R,G,B 1hr each, Ha (7nm) - 2.5hr L,R,G,B taken in 30s subs, Ha in 60s subs The resulting image seems quite a 'warm' , so I don't think I have got the Ha blend on red channel quite right yet, image is cropped as I didnt quite match the framing across my sessions, Appreciate comments and advice Bryan
It was such a warm night last night that the camera didn't get below -26c Made it really pleasant to get the scope up and running though :-) Here's my start on the Pelican Nebula in narrow band - the weather doesn't look promising for the coming week and before you know it it will be passed its prime location in the sky This was 11 x 5min Ha with flats but no darks (I HAVE to get around to making a dark library lol) Higher Res: http://www.wobsastro.com/ASI1600MM Gallery/#IC_5070_170828_115mm_ASI1600_11x5min_Ha.png