#petavius

[quiltofstars]

The Moon with featured craters (right to left) Petavius, Balmer, Langrenus, Apollonius, and Firmicus and seas Mare Fecunditatis (”Sea of Fertility”) and Mare Crisium (”Sea of Crises”) // Georges

Petavius crater is named after the French Jesuit Denis Pétau (1583-1652) known for his works on chronology.

Balmer crater is named after the Swiss mathematician Johann Balmer (1825-1898) who studied the hydrogen atom, discovering its series of optical emission lines.

Langrenus crater is named after the Dutch astronomer Michael van Langren (1598-1675) who used observations of the Moon to help determine longitude on Earth.

Apollonius crater is named after Apollonius of Perga (c. 240 BC - 190 BC), an ancient Greek astronomer who defined the terms ellipse, parabola, and hyperbola, and introduced eccentric orbits for the planets.

Firmicus crater is named after Julius Firmicus Maternus (c. 300s AD), a Roman astrologer.

[stargazerrob]

Petavius imaged on the 9th of December with an 8" reflector at 3000mm. That line on the crater floor is Rimae Petavius I, a rille which is nearly 100 miles long

[jmonterol]

Langrenus (1), Vandelinus (2), Petavius (3) #luna #moon #langrenus #vandelinus #petavius #crateresdelaluna #mooncraters #moonlovers #sistemasolar #solarsystem #astrofotografia #astrophotography #desdemiterraza #frommyterrace #maksutovcassegrain #astronomia #astronomy https://www.instagram.com/p/B0yfn1ijOTd/?igshid=14ntujkww8zyw

[oscarlhermitte]

Close-up of Petavius crater as seen on our lunar globe. Just over a week left to get your MOON on Kickstarter. Link in the bio! #lunarglobe #tech #design #kickstarter #close-up #moon #space #nasa #petavius #crater