This is a Star Trek Enterprise D cutaway poster by Christopher Cushman, colors by Gary Richardson.

The illustration shows most if not all areas of the Enterprise-D. There is also a print version of this available which would be even higher resolution. The artist actually had some trouble from the company that commissioned him. They tried to avoid paying hem. More info on the artists page: https://technicalillustrators.org/2019/12/christopher-cushman/