Hi All
The good thing about narrowband is that you can still image when there is light pollution and the moon in the sky and it does show incredible detail. The trouble is deciding which palette to use. The most commonly used seems to be the HST Hubble Space Telescope) palette which is SII-Ha-OIII mapped to RGB. Less commonly used is the CFHT (Canada France Hawaii Telescope) Palette which is Ha-OIII-SII mapped to RGB, and then there are others such as mapping Ha-OIII-OIII to RGB and the reverse HST palette so that OIII-Ha-Sa = RGB.
My preference is the HST palette but I use the HaOIIIOIII palette where there is no or little SII present and I haver used HaSIIOIII before for my narrowband shot of the horsehead nebula last year. Anyway I posted an image of NGC6960 in the HST palette and Richard Crisp suggested I tried the CFHT palette as it looks good on the Veil components and Mark Sibole suggested th HaOIIIOIII as there is very litle SII.
So I followed the suggestions and at the same time I reprocessed the original HST version. Before I reprocessed it I actualy prefered the CFHT version but after reprocessing the HST version I now prefer that. I'd be interested to hear others views
Thanks for looking
Best wishes
Gordon

HST


CFHT


HaOIIIOIII

wow, very compelling images!

Very pretty.

__________________
Observatorio de la Ballona

Hello Gordon:
It seems to me a very good work.
The three have very pleasant colors.
Many greetings
Cesar

__________________
____________________________________
http://www.astrophoto.com.mx

I found my background XD