Final answer:
There does not appear to be a historical figure named J. Stirling Getchell with relevant contributions to art or astronomy. The figures mentioned in the question, Alfred Stieglitz and Harlow Shapley, are recognized in their respective fields and may be the intended subjects of interest.
Step-by-step explanation:
J. Stirling Getchell appears to be a figure whose information might be conflated with others in historical reference, particularly given the context provided in the question which refers to figures not directly connected to the name provided. Alfred Stieglitz was a famous photographer, writer, publisher, exhibition organizer, and art gallery owner who significantly influenced the U.S. art scene by introducing European avante-garde artists. Similarly, Harlow Shapley was a renowned astronomer who worked at the Mount Wilson Observatory and conducted a pioneering study of variable stars in globular clusters.
However, there is no well-known historical figure named J. Stirling Getchell recognized for contributions in photography, art, or astronomy, which suggests that there may be confusion with the names mentioned. Without more context or correct information, it's pivotal to note that a comprehensive answer about J. Stirling Getchell cannot be provided. Readers are encouraged to review the contributions of Alfred Stieglitz in the world of photography and art galleries, and Harlow Shapley in the field of astronomy, as they are pertinent in their respective fields.