I'm starting a new topic to discuss this filter. It will concentrate on rational and constructive discussions of its advantages and disadvantages and people's actual experience with the filter, not conjectures, criticisms of how people spend their money, off-topic examples of wonderful work you've done, or blind bashing. I'll start with something started on another thread, which is reasonable expectations of what you might be able to do with the filter, given previous narrowband experience. I showed an image containing Halpha and OIII information on the Crescent Nebula, with the two narrowbands done separately, as an example of what you might be able to do with the Triad simultaneously. A legitimate question was raised about whether the two channels were stretched separately and then combined.
I went back and looked at some more recent imaging work I did on the Crescent Nebula. Here is the Halpha channel info (56 X 300 sec.), stretched using Histogram Transformation in PixInsight:
Here is the OIII channel (49 X 300 sec., so it's actually ~13% less integration time), stretched using the exact same settings in Histogram Transformation:
Click on the small images for better images and more information.
Now, the OIII is somewhat dimmer. However, I think you'll have to agree that they are certainly of the same order of magnitude of brightness, and I think they would look fine combined together, either in quasi-real-time (not possible using separate filters) or in processing, where you could stretch the OIII a bit more. Certainly, the difference is no worse or better than what you might see between LRGB filters. Keep in mind with the Triad, it would be one set of lights, one filter, one set of flats, one focus point, no filter wheel, and much simpler processing. It also opens up the possibility of multi-narrowband EAA.
Edited by johnsoda, 31 January 2019 - 03:15 PM.