The subject must be thought of in terms of the 20th century, of houses he lives in and places he works, in terms of the kind of light the windows in these places let through and by which we see him every day. ↗
In general, the objects in the universe that are very high-energy objects, or the processes that are high-energy processes, will radiate more in the short wavelength range towards the gamma rays or the x-rays. ↗
On one hand, to be able to go from one direction in the sky to study such an object to another direction to study another object, and on the other hand to be able to maintain accurately the position in space. ↗
The objects that are of moderate energy, like our sun or most of the stars that we see in the night sky with the naked eye, are objects in which relatively moderate energy processes are taking place. ↗
I'm attracted to images that come from a personal exploration of a subject matter. When they have a personal stamp to them, then I think it becomes identifiable. ↗