Abell 39
Abell 39 is a planetary nebula located approximately 3,800 light-years away in the northern constellation Hercules. It has an integrated apparent visual magnitude of 13.7… Read More »Abell 39
Keystone
- Constellations
- Constellation List
- Andromeda Constellation
- Antlia Constellation
- Apus Constellation
- Aquarius Constellation
- Aquila Constellation
- Ara Constellation
- Aries Constellation
- Auriga Constellation
- Boötes Constellation
- Caelum Constellation
- Camelopardalis Constellation
- Cancer Constellation
- Canes Venatici Constellation
- Canis Major Constellation
- Canis Minor Constellation
- Capricornus Constellation
- Carina Constellation
- Cassiopeia Constellation
- Centaurus Constellation
- Cepheus Constellation
- Cetus Constellation
- Chamaeleon Constellation
- Circinus Constellation
- Columba Constellation
- Coma Berenices Constellation
- Corona Australis Constellation
- Corona Borealis Constellation
- Corvus Constellation
- Crater Constellation
- Crux Constellation
- Cygnus Constellation
- Delphinus Constellation
- Dorado Constellation
- Draco Constellation
- Equuleus Constellation
- Eridanus Constellation
- Fornax Constellation
- Gemini Constellation
- Grus Constellation
- Hercules Constellation
- Horologium Constellation
- Hydra Constellation
- Hydrus Constellation
- Indus Constellation
- Lacerta Constellation
- Leo Constellation
- Leo Minor Constellation
- Lepus Constellation
- Libra Constellation
- Lupus Constellation
- Lynx Constellation
- Lyra Constellation
- Mensa Constellation
- Microscopium Constellation
- Monoceros Constellation
- Musca Constellation
- Norma Constellation
- Octans Constellation
- Ophiuchus Constellation
- Orion Constellation
- Pavo Constellation
- Pegasus Constellation
- Perseus Constellation
- Phoenix Constellation
- Pictor Constellation
- Pisces Constellation
- Piscis Austrinus Constellation
- Puppis Constellation
- Pyxis Constellation
- Reticulum Constellation
- Sagitta Constellation
- Sagittarius Constellation
- Scorpius Constellation
- Sculptor Constellation
- Scutum Constellation
- Serpens Constellation
- Sextans Constellation
- Taurus Constellation
- Telescopium Constellation
- Triangulum Australe Constellation
- Triangulum Constellation
- Tucana Constellation
- Ursa Major Constellation
- Ursa Minor Constellation
- Vela Constellation
- Virgo Constellation
- Volans Constellation
- Vulpecula Constellation
- Constellation Map
- Constellation Names
- Asterisms
- Big Dipper
- Little Dipper
- Orion’s Belt
- Orion’s Sword
- Southern Cross
- Summer Triangle
- Northern Cross
- Cassiopeia’s W
- Spring Triangle
- Great Diamond
- Winter Hexagon
- Winter Triangle
- Teapot
- The Kite
- Great Square of Pegasus
- Water Jar
- False Cross
- Diamond Cross
- The Fish Hook
- The Sickle
- Pointer Stars
- Auriga’s Hexagon
- Spica’s Spanker
- The Coathanger (Brocchi’s Cluster)
- Kemble’s Cascade
- The Keystone
- Three Leaps of the Gazelle
- Messier Objects
- Constellations by Month
- Seasonal Constellations
- What Is a Constellation?
- Caldwell Catalogue
- Telescopes and Night Sky Guides
- Constellations
- Constellation List
- Andromeda Constellation
- Antlia Constellation
- Apus Constellation
- Aquarius Constellation
- Aquila Constellation
- Ara Constellation
- Aries Constellation
- Auriga Constellation
- Boötes Constellation
- Caelum Constellation
- Camelopardalis Constellation
- Cancer Constellation
- Canes Venatici Constellation
- Canis Major Constellation
- Canis Minor Constellation
- Capricornus Constellation
- Carina Constellation
- Cassiopeia Constellation
- Centaurus Constellation
- Cepheus Constellation
- Cetus Constellation
- Chamaeleon Constellation
- Circinus Constellation
- Columba Constellation
- Coma Berenices Constellation
- Corona Australis Constellation
- Corona Borealis Constellation
- Corvus Constellation
- Crater Constellation
- Crux Constellation
- Cygnus Constellation
- Delphinus Constellation
- Dorado Constellation
- Draco Constellation
- Equuleus Constellation
- Eridanus Constellation
- Fornax Constellation
- Gemini Constellation
- Grus Constellation
- Hercules Constellation
- Horologium Constellation
- Hydra Constellation
- Hydrus Constellation
- Indus Constellation
- Lacerta Constellation
- Leo Constellation
- Leo Minor Constellation
- Lepus Constellation
- Libra Constellation
- Lupus Constellation
- Lynx Constellation
- Lyra Constellation
- Mensa Constellation
- Microscopium Constellation
- Monoceros Constellation
- Musca Constellation
- Norma Constellation
- Octans Constellation
- Ophiuchus Constellation
- Orion Constellation
- Pavo Constellation
- Pegasus Constellation
- Perseus Constellation
- Phoenix Constellation
- Pictor Constellation
- Pisces Constellation
- Piscis Austrinus Constellation
- Puppis Constellation
- Pyxis Constellation
- Reticulum Constellation
- Sagitta Constellation
- Sagittarius Constellation
- Scorpius Constellation
- Sculptor Constellation
- Scutum Constellation
- Serpens Constellation
- Sextans Constellation
- Taurus Constellation
- Telescopium Constellation
- Triangulum Australe Constellation
- Triangulum Constellation
- Tucana Constellation
- Ursa Major Constellation
- Ursa Minor Constellation
- Vela Constellation
- Virgo Constellation
- Volans Constellation
- Vulpecula Constellation
- Constellation Map
- Constellation Names
- Asterisms
- Big Dipper
- Little Dipper
- Orion’s Belt
- Orion’s Sword
- Southern Cross
- Summer Triangle
- Northern Cross
- Cassiopeia’s W
- Spring Triangle
- Great Diamond
- Winter Hexagon
- Winter Triangle
- Teapot
- The Kite
- Great Square of Pegasus
- Water Jar
- False Cross
- Diamond Cross
- The Fish Hook
- The Sickle
- Pointer Stars
- Auriga’s Hexagon
- Spica’s Spanker
- The Coathanger (Brocchi’s Cluster)
- Kemble’s Cascade
- The Keystone
- Three Leaps of the Gazelle
- Messier Objects
- Constellations by Month
- Seasonal Constellations
- What Is a Constellation?
- Caldwell Catalogue
- Telescopes and Night Sky Guides