Quote:
Originally Posted by SB
Hi Raymo,
My beginner level understanding is that if the Hubble palate is used the lagoon will indeed look blue in the centre. In this case I did not recolour the filter signals as I was using an OSC with my narrowband filters
|
Hi Chris. Not necessarily. I took a picture last year of the Lagoon using the 5D IV last year without filters, just broadband. The centre is blue, mainly because a stock 5D IV doesn't pick up much hydrogen alpha.
https://www.iceinspace.com.au/forum/...85&postcount=5
At the top of that same thread is an image with an OSC with a duoband filter.
So I guess the point is, there is no "natural". We tend to define natural as mimicking the human eye, which a DSLR would be the closest, but it's still not natural or a universal law. Human eyes are incredibly insensitive to a broad spectrum, so this is where the artistic license comes into it that you mention.
If you have a camera that can capture more hydrogen, then the centre becomes less blue and more red (not as red as the edges) because there's not only Oxygen there, but also a lot of Hydrogen. You can process that away by focussing on the Oxygen. There's no right or wrong
