
1) German surname
Found on
https://www.crosswordclues.com/clue/oppolzer

Oppolzer is a surname of Austrian origin. Most people with the surname Oppolzer have their ancestors in a small region in Southern Bohemia, which was Austrian in former times, but belongs to the Czech Republic today. There is also a small village with an old fort called Oppolz (Czech name Tycha) in this region. Famous Oppolzers are Both Johann and...
Found on
http://en.wikipedia.org/wiki/Oppolzer
[crater] Oppolzer is the remnant of a lunar crater that is located on the southern edge of Sinus Medii, along the meridian of the Moon, named after the Austrian Astronomer Theodor von Oppolzer. It is located within one crater diameter of the origin of the selenographic coordinate system at 0° N, 0° W. Attached to the surviving remnants of...
Found on
http://en.wikipedia.org/wiki/Oppolzer_(crater)
No exact match found.