I just ordered a new camera to test: Arducam OV9281 1MP Mono Global Shutter MIPI Camera for the Raspberry Pi.

If the tests with Debayered cameras are anything to go by, I am hoping for some really nice results with this, namely better spectral response and better resolving ability for things like Fraunhoffer lines.

Of course,  this will drive up the cost of the project a little and may require some tinkering with the software, but the returns might well be worth it.

i will post again in here once it arrives and I have done some tests.