<a href="https://en.wikipedia.org/wiki/Kuffner_Observatory" class="extiw" title="en:Kuffner Observatory">Kuffner Observatory</a>, <a href="https://en.wikipedia.org/wiki/Vienna" class="extiw" title="en:Vienna">Vienna</a>, <a href="https://en.wikipedia.org/wiki/Austria" class="extiw" title="en:Austria">Austria</a> - in the dome of the <a href="https://en.wikipedia.org/wiki/Great_refractor" class="extiw" title="en:Great refractor">great refractor</a>
Manfred Werner (<a href="//commons.wikimedia.org/wiki/User:Tsui" title="User:Tsui">Tsui</a>)
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>