Adam M. answered • 09/19/19
Professional landscape and astrophotographer traveling the world.
The first thing to consider is that "astrophotography" itself can be further broken down to more specific genres; Milky Way photography, Deep Space photography, Star Trailing, lunar photography, etc.
As a generality, all cameras ever have been, or will be, are boxes that capture light. In that respect, astrophotography is no different from other genres. We still rely on shutter speed, aperture, and ISO to capture our light and create our image.
In aesthetic terms, most forms of astrophotography resemble typical landscape photography. You still generally compose your images to have a foreground, subject, etc, with the only difference being the amount of light available.
Deep Space photography is very different, however, as we are really focusing entirely on one distant object. Your compositional options will really be limited and a greater understanding of technical methods and equipment will be paramount.
I suggest beginning your search for knowledge with a more specific identification of what you are hoping to capture. For example, if you are wanting to know more about photographing nebula and planets and such, you will want to begin researching Deep Space photography. Same goes for Milky Way, Star Trailing, etc. Astrophotography may be too broad a term to gain useful insight.
Hope this helped!
