Hi All
Well, I have finally taken leave of my senses, I knew it was going to happen sooner or later what with with all these sleepless nights. I know that narrowband imaging is more associated with emission nebulae, SNR, planetary nebulae and the like but I decided to do this as an experiment while I was waiting for IC 443 to come from behind my house. The moon was almost full so the sky was very bright and as I already had the emission line filters loaded in the filter wheel (LRGB set is still in the boxes), so I did 6x10 minutes unguided for each filter and combined it SII=Red Ha=Green and OIII=Blue (HST palette). Although I wouldn't recommend people spend valuable imaging time taking pictures of star clusters with NB filters I am always wanting to try new things even if they don't sometimes work, I am reasonably satisfied with the way that this has turned out although some of the colours are a bit more muted than what I have seen elsewhere. I last did this late last year with a WO 66 and Starlight Xpress M8C and this image can be seen for comparison in the star cluster section of the image gallery on my website http://www.imagingtheheavens.co.uk
Further details about the equipment used is also on my site with the image
Thanks for looking
Best wishes
Gordon