I was started on astrophotography in the photographic film epoch. At that time, the late eighties, the favourite film among astrophotographers was the Kodak Technical Pan 2415.

This film was hypered using "forming gas" and was optimal because it increased the sensitivity but not the grain.

Some of the best images of Tony Hallas and Jack Newton was made with this film.

Now, in the digital age, using H-alpha filters and CCD cameras, it is possible emulate some of this classical images.