Amateur astronomy

Amateur astronomy is a hobby where participants enjoy observing or imaging celestial objects in the sky using the unaided eye, binoculars, or telescopes. Even though scientific research may not be their primary goal, some amateur astronomers make contributions in doing citizen science, such as by monitoring variable stars, double stars, sunspots, or occultations of stars by the Moon or asteroids, or by discovering transient astronomical events, such as comets, galactic novae or supernovae in other galaxies.
Messier 4
Messier 4 or M4 is a globular cluster in the constellation of Scorpius. It was discovered by Philippe Loys de Chéseaux in 1745 and catalogued by Charles Messier in 1764. It was the first globular cluster in which individual stars were resolved
Albert Graham Ingalls
Albert Graham Ingalls was an American scientific editor and amateur astronomer. Through his columns in Scientific American, including "The Amateur Scientist", and his three-volume series Amateur Telescope Making, Ingalls exerted a great influence on
Mare Insularum
Mare Insularum is a lunar mare located in the Insularum basin just south of the western Mare Imbrium. The basin material is of the Lower Imbrian epoch, with the mare material of the Upper Imbrian epoch. The mare is bordered by the craters Copernicus on
SN 2005gl
SN 2005gl was a supernova in the barred-spiral galaxy NGC 266. It was discovered using CCD frames taken October 5, 2005, from the 60 cm automated telescope at the Puckett Observatory in Georgia, US, and reported by Tim Puckett in collaboration with Peter
Ishaqi
Ishaqi is a small town in the Balad District of the Saladin Governorate of Iraq, about 60 miles north of Baghdad
Mons Penck
Mons Penck is a mountain promontory on the near side of the Moon. It lies just to the northeast of the crater Kant, to the north of Ibn-Rushd and the Rupes Altai scarp. Southeast of Mons Penck are the prominent craters Theophilus and Cyrillus
Messier 14
Messier 14 is a globular cluster of stars in the constellation Ophiuchus. It was discovered by Charles Messier in 1764
Montes Agricola
Montes Agricola is an elongated range of mountains near the eastern edge of the central Oceanus Procellarum lunar mare. It lies just to the northwest of a plateau containing the craters Herodotus and Aristarchus
Montes Caucasus
Montes Caucasus is a rugged range of mountains in the northeastern part of the Moon. It begins at a gap of level surface that joins the Mare Imbrium to the west with the Mare Serenitatis to the east, and extends in an irregular band to the north-northeast
Cold Water Cemetery
Cold Water Cemetery (CWC), also known as the Sinks and the Patterson Family Cemetery, is a historic cemetery located at 15290 Old Halls Ferry Road in Florissant, St. Louis County, Missouri. The cemetery is 1.5 acres and was historically most active