Douglas Schrock
Douglas Shrock, sometimes credited as Doug Shrock or "Shrox", is a science fiction digital artist based in Fortuna, California, whose work has included Star Trek and Star Wars, and commissioned work for NASA. 

His artwork has been featured in the Star Trek: Ships of the Line calendar series since 2018.

Bibliography 
Star Trek: Ships of the Line calendars
2018 – September ("What Are You?")
2019 – January ("Assignment Earth")
2020 – Cover ("A Weapon for the Empire")

External link
  – official site

Star Trek calendar artists