Paul Hainzel was a German

Germany

Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...

 astronomer

Astronomer

An astronomer is a scientist who studies celestial bodies such as planets, stars and galaxies.Historically, astronomy was more concerned with the classification and description of phenomena in the sky, while astrophysics attempted to explain these phenomena and the differences between them using...

 and the mayor

Mayor

In many countries, a Mayor is the highest ranking officer in the municipal government of a town or a large urban city....

 of Augsburg

Augsburg

Augsburg is a city in the south-west of Bavaria, Germany. It is a university town and home of the Regierungsbezirk Schwaben and the Bezirk Schwaben. Augsburg is an urban district and home to the institutions of the Landkreis Augsburg. It is, as of 2008, the third-largest city in Bavaria with a...

, Germany.

In 1569, Paul Hainzel and his brother Johannes Baptista Hainzel helped their friend Tycho Brahe

Tycho Brahe

Tycho Brahe , born Tyge Ottesen Brahe, was a Danish nobleman known for his accurate and comprehensive astronomical and planetary observations...

 design and construct a large quadrant

Quadrant (instrument)

A quadrant is an instrument that is used to measure angles up to 90°. It was originally proposed by Ptolemy as a better kind of astrolabe. Several different variations of the instrument were later produced by medieval Muslim astronomers.-Types of quadrants:...

. The quadrant, which was 19 feet in radius and built on Hainzel's estate, was used for measuring the height of stars. However, it was destroyed five years later by fire or wind, before it could make significant observations.

Around the same time that the azimuthal quadrant was designed, Tycho also gave Hainzel a portable astronomical sextant

Sextant (astronomical)

Sextants for astronomical observations were used primarily for measuring the positions of stars. They are little used today, having been replaced over time by transit telescopes, astrometry techniques, and satellites such as Hipparcos....

 for measuring the angle between stars.

The lunar crater Hainzel

Hainzel (crater)

Hainzel is the southern member of a trio of overlapping lunar craters. The composite rim is located at the west edge of Lacus Timoris in the southwest sector of the Moon...

is named after him.