Sky watching is a great hobby, it integrates art, history, physics and mathematics in one box.
Watching the constellations requires a lot of patience, especially in a light polluted city.
Taking pictures of the night sky was also a challenge, long before the T-grain colour films were available, using panchromatic ( preferably extended-red ) film was the only choice. With long exposures and the effect of reciprocity failure of the different silver halide emulsions, estimation of exposure was relatively difficult. In Black and white pictures,the extended red film yields very uniform result with OBAFGKM star types. Panchromatic film can be used, red stars may appear as grey dots only.
With modern film developers in the 1960's the using of the available Penidone- hydroquione as the main reducing agents did help in simulating the results of moderate push-processing. Night sky pictures using this new method did yield acceptable negatives without using complicated film hypering methods or the multi-bath push processing method.