>>4057252Pushing color negative film that much can cause some color shifts once processed. Plus, pushing has the drawback of increasing contrast, which might leave you with blackness with some stars - if that's what you're going for, colors get more punchy too.
Try a few different exposures and note them so you'll get a better idea of what to expect under those light conditions in the future.
With analog, its best approached with a scientific mindset. Since most older books had different films they were working with at the time, the literature for them can be outdated. The speed of the film is one thing, yes, but the behavior of the technical specifications of the emulsion and dyes under different lighting conditions becomes very narrow with low light.
Consider filtration too as they are useful for cutting out light pollution, but will introduce some color cast and require slightly longer exposures.
Slide films are great from what I have understood but you get deep into reciprocity failure with that slow of a speed. Everything has a trade off. :)
I didn't know about Adox CMS 20, I'll check it out, thanks! With B&W its also possible to take a set of 3 filtered Red, Green, and Blue negatives and combine them when scanned in photoshop or in pin registration in the darkroom with each other to produce a color image. This is a possibility with Delta 3200 and Kodak P3200 with their fairly good grain characteristics at such high sensitivities.
