Hello everyone.
Of course, the nice thing about narrowband bi-colour imaging is that you can save a third of the time in data acquisition.
So this image is just that - using an Astrodon 3nm OIII filter and 5nm Ha filter. It is also an excellent example of being able to make maximum use of synthetic luminance for great effect. Literally, the Ha and OIII frames are almost completely different, as you would expect.
http://www.martinpughastrophotograph...ngle_50Pct.jpg
So this is 3.5hrs Ha and 5hrs OIII. CDK 17"/Apogee U16M.
The full sized version is here, but its a large file (14Mb).
Thanks for looking
http://www.martinpughastrophotograph...s-Triangle.jpg
Martin