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I respect what you are doing here Steve.
I would be interested to know from Olivier if colour data using ubvri bands would be more useful (valuable)
I imagine it would be relatively straight forward to script regular calibration frames utilising standard reference fields during an imaging run with the data tagged to each exposure. They might even have the script to give us ex-gratis.
I doubt the throughput would be as high as you would get with high transmission lrgb filter sets, but it is a trade off that would be worth making in certain circumstances imho.
Anyway, there is no harm in putting the idea to the ESO guys.
At the very least, they will no doubt take you/us more seriously if we develop a more rigorous protocol with respect to our data acquisition.
Nice work btw.
Best
c
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