Context: In astronomy, Muḥammad ibn Jābir al-Ḥarrānī al-Battānī improved the precision of the measurement of the precession of the Earth's axis. The corrections made to the geocentric model by al-Battani, Averroes, Nasir al-Din al-Tusi, Mu'ayyad al-Din al-'Urdi and Ibn al-Shatir were later incorporated into the Copernican heliocentric model. Heliocentric theories were also discussed by several other Muslim astronomers such as Al-Biruni, Al-Sijzi, Qotb al-Din Shirazi, and Najm al-Dīn al-Qazwīnī al-Kātibī. The astrolabe, though originally developed by the Greeks, was perfected by Islamic astronomers and engineers, and was subsequently brought to Europe.

Question: What field did Muḥammad ibn Jābir al-Ḥarrānī al-Battānī contribute to?
Answer: astronomy

Question: What work is Muḥammad ibn Jābir al-Ḥarrānī al-Battānī known for as it regards to earth?
Answer: improved the precision of the measurement of the precession of the Earth's axis

Question: What model did the work of Muslim World astronomers contribute to?
Answer: the Copernican heliocentric model

Question: Who created the astrolabe?
Answer: the Greeks

Question: Who is said to have mastered the astrolabe?
Answer: Islamic astronomers and engineers

Question: What measurment did Copernicas improve?
Answer: Unanswerable

Question: What model did Copernicas use to measure the earth's axis?
Answer: Unanswerable

Question: Who perfected the astrolabe originally developed by Islamic astronomers?
Answer: Unanswerable

Question: What model did Al-Biruni make corrections to?
Answer: Unanswerable