How big are Messier objects in pixels?

Now I am getting some more experience with some of the brighter Messier objects, I decided to have a look at the catalogue and see how bright and how large some of the objects are – basically what I can expect to see in my telescope. All the copies of the Messier catalogue floating aroundContinue reading “How big are Messier objects in pixels?”

How many megapixels do you get from film?

Well that’s a question. There’s no easy answer, but I’ll discuss it a little here. If you just want the figures, scroll down to the table! The number of film “pixels” (grains) does not equal to the resolution of the film – unlike pixels on a digital sensor. For now let’s ignore this fact andContinue reading “How many megapixels do you get from film?”