This is a bit of a combined image. It is some Ha, OIII, SII data collected last year and the Ha and RGB data I collected a couple of weeks ago.
It was an interesting exercise trying to blend all these filters. I am happy with the end result although not a lot different from the NB data mapped as RGB with RGB stars.
Total exposure time for this lot is around 6.5 hrs.
Love the details you got across the field. Gorgeous. Not sure about the colors though. Red seems overwhelming. How did you blend the lot? Sii Red, Ha Green, Oiii Blue as in HST palette then RGB stars?
Doug, great shot the narrowband Ha, OIII and SII really livens up the image.
The blending is very smooth and delivers great contrast.
I can now see what hours of data can deliver. Well done
Thanks Geoff
Quote:
Originally Posted by multiweb
Love the details you got across the field. Gorgeous. Not sure about the colors though. Red seems overwhelming. How did you blend the lot? Sii Red, Ha Green, Oiii Blue as in HST palette then RGB stars?
Marc, This was a hard one to figure so it ended up being Ha60%+ L = Lum layer, Ha 50% + Red + SII 100% = Red, OIII 30% + Green = Green, OIII 80% + Blue + Ha 10% = Blue . It was really a lot of fiddling to get it blended then I used the combined RGB stars as a star replacement as all the stars went a funny purple/red colour. I really wonder if it was worth the effort as the Ha,OIII,OIII combination from last year was so similar except for the stars. Interesting exercise though.
Quote:
Originally Posted by strongmanmike
Popular object at the moment Doug.
I like the orientation and the overall look. Lots of detail in the Great Wall of Ara and plenty of coloured stars
Mike
Thanks Mike, Stars have always been my bug bear with NB works and I am very happy with how this worked out. Looking at it again here at work I might lighten it back a bit when I get home. It seems a little dark and dreary. Fun to do but hours of work.
Marc, This was a hard one to figure so it ended up being Ha60%+ L = Lum layer, Ha 50% + Red + SII 100% = Red, OIII 30% + Green = Green, OIII 80% + Blue + Ha 10% = Blue . It was really a lot of fiddling to get it blended then I used the combined RGB stars as a star replacement as all the stars went a funny purple/red colour. I really wonder if it was worth the effort as the Ha,OIII,OIII combination from last year was so similar except for the stars. Interesting exercise though.
Ha and Sii go in red alright but you shouldn't use Ha in the Lum or very sparingly.Blend all your Ha + Sii with your RGB red channel. I'd also mix 20% of Ha in the blue (h beta) with a lot of Oiii to blend with your RGB blue, then some more Oiii blended with the RGB green channel as well. That should get you close to a nice RGB pic with some punch to it. At the moment the Ha Lum levels everything else. Like the pink salmon effect.
Ha and Sii go in red alright but you shouldn't use Ha in the Lum or very sparingly.Blend all your Ha + Sii with your RGB red channel. I'd also mix 20% of Ha in the blue (h beta) with a lot of Oiii to blend with your RGB blue, then some more Oiii blended with the RGB green channel as well. That should get you close to a nice RGB pic with some punch to it. At the moment the Ha Lum levels everything else. Like the pink salmon effect.
Thanks Marc, I will give it a go when I get some time. I only blend the Ha into the Lum to give that bit of a lift to the highlights in the channel but will give your method a go. All so time consuming.
Quote:
Originally Posted by TrevorW
Nice one Doug
Thanks Trevor
Quote:
Originally Posted by Ross G
Great photo Doug.
I don't have the knowledge to comment on your colours, but it does look good.
Like many of your other photos I have seen, it is very sharp and detailed.
I like it! The colour goes well with the dark lane. It is also good to see the colour variations in the stars.
Keep it up!!
ps I know others might know, but for my sake... what scope/camera/mount is used?
Thanks Grant,
This was a combination of 2 scopes. The NB data was captured with a Takahashi FSQ106ED and QHY9 with Baader NB filters and the RGB was captured with a Takahashi TSA 120, QHY9 and Baader LRGB filters.
All sitting atop a Losmandy G11 and guided with QHY5 in an Orion OAG.
