Professional vision has become a key concept for the study of expertise. This paper celebrates the sophistication of Charles Goodwin's (1994) formulation of the concept by specifying a form of professional vision, rather than relying on its coinage to do the work of analysis. Video of a public astronomy education session in a Portuguese observatory shows how the astronomer instructs a young boy to recognize sunspots against the background of the Sun. The astronomer is unable to see what the visitor sees; yet he can explain the visitor's observation, which he does through a question and answer sequence. We call this practice of making astronomical sense of observations “seeing by proxy”. Seeing by proxy specifies professional vision as a cultural method of instruction. It particularizes professional vision as a praxeological not a conceptual matter.

专业视野已成为研究专业知识的关键概念。本文通过指定一种专业愿景的形式来庆祝 Charles Goodwin (1994) 对概念的复杂性，而不是依赖其造币来进行分析工作。葡萄牙天文台公共天文学教育课程的视频展示了天文学家如何指导一个小男孩识别太阳背景下的太阳黑子。天文学家无法看到访客看到的东西；然而，他可以通过问答序列来解释访客的观察。我们将这种从天文角度观察的做法称为“代理观察”。代理观看将专业视野指定为一种文化教学方法。