The Messier Catalogue is a famous catalogue in Astronomy. It consists of 110 deep sky objects, including open and globular star clusters, galaxies, nebulae, an asterism, a double star and even a supernova remnant. It was compiled in the 18th century by Charles Messier.

Messier was a comet hunter who was born in Badonviller, France on June 26, 1730. When searching for comets he was frustrated by fixed objects that looked like comets in the night sky but actually weren't. These fuzzy "comet" like objects hindered his searches so he catalogued them in order to avoid them in future.

The first version of his catalogue contained 45 objects and was published in 1774 in the journal of the French Academy of Sciences in Paris. Over the next 7 years he updated the catalogue and published the final version in 1781, containing 103 objects. Many of these objects he actually discovered himself.

On several different occasions between 1921 and 1966, astronomers and historians discovered evidence of another 7 deep-sky objects that were observed either by Messier or his friend and assistant, Pierre Mechain, shortly after the final version was published. These objects, numbered M104 to M110, are now accepted by astronomers as "official" Messier objects.

The Messier catalogue is still used by professional and amateur astronomers today:

Messier ObjectName / TypeConstellationChart
M1Crab Nebula (Supernova Remnant)TaurusM1_Finder_Chart.pdf
M2Globular ClusterAquariusM2_Finder_Chart.pdf
M3Globular ClusterCanes VenaticiM3_Finder_Chart.pdf
M4Globular ClusterScorpiusM4_Finder_Chart.pdf
M5Globular ClusterSerpens CaputM5_Finder_Chart.pdf
M6Butterfly Cluster (Open Cluster)ScorpiusM6_Finder_Chart.pdf
M7The Ptolemy Cluster (Open Cluster)ScorpiusM7_Finder_Chart.pdf
M8Lagoon Nebula (Emission Nebula)SagittariusM8_Finder_Chart.pdf
M9Globular ClusterOphiuchusM9_Finder_Chart.pdf
M10Globular ClusterOphiuchusM10_Finder_Chart.pdf
M11Wild Duck Cluster (Open Cluster)ScutumM11_Finder_Chart.pdf
M12Globular ClusterOphiuchusM12_Finder_Chart.pdf
M13Great Hercules Globular ClusterHerculesM13_Finder_Chart.pdf
M14Globular ClusterOphiuchusM14_Finder_Chart.pdf
M15Globular ClusterPegasusM15_Finder_Chart.pdf
M16Emission Nebula with Open ClusterSerpensM16_Finder_Chart.pdf
M17Emission Nebula with Open ClusterSagittariusM17_Finder_Chart.pdf
M18Open ClusterSagittariusM18_Finder_Chart.pdf
M19Globular ClusterOphiuchusM19_Finder_Chart.pdf
M20Trifid Nebula (Nebula)SagittariusM20_Finder_Chart.pdf
M21Open ClusterSagittariusM21_Finder_Chart.pdf
M22Sagittarius Cluster (Globular Cluster)SagittariusM22_Finder_Chart.pdf
M23Open ClusterSagittariusM23_Finder_Chart.pdf
M24Star CloudSagittariusM24_Finder_Chart.pdf
M25Open ClusterSagittariusM25_Finder_Chart.pdf
M26Open ClusterScutumM26_Finder_Chart.pdf
M27Dumbbell Nebula (Planetary Nebula)VulpeculaM27_Finder_Chart.pdf
M28Globular ClusterSagittariusM28_Finder_Chart.pdf
M29Open ClusterCygnusM29_Finder_Chart.pdf
M30Globular ClusterCapricornusM30_Finder_Chart.pdf
M31Andromeda Galaxy (Spiral Galaxy)AndromedaM31_Finder_Chart.pdf
M32Dwarf Elliptical GalaxyAndromedaM32_Finder_Chart.pdf
M33Triangulum Galaxy (Spiral Galaxy)TriangulumM33_Finder_Chart.pdf
M34Open ClusterPerseusM34_Finder_Chart.pdf
M35Open ClusterGeminiM35_Finder_Chart.pdf
M36Open ClusterAurigaM36_Finder_Chart.pdf
M37Open ClusterAurigaM37_Finder_Chart.pdf
M38Open ClusterAurigaM38_Finder_Chart.pdf
M39Open ClusterCygnusM39_Finder_Chart.pdf
M40Double StarUrsa MajorM40_Finder_Chart.pdf
M41Open ClusterCanis MajorM41_Finder_Chart.pdf
M42The Great Orion Nebula (Nebula)OrionM42_Finder_Chart.pdf
M43De Mairan's Nebula (Nebula)OrionM43_Finder_Chart.pdf
M44The Praesepe (Open Cluster)CancerM44_Finder_Chart.pdf
M45Pleiades (Open Cluster)TaurusM45_Finder_Chart.pdf
M46Open ClusterPuppisM46_Finder_Chart.pdf
M47Open ClusterPuppisM47_Finder_Chart.pdf
M48Open ClusterHydraM48_Finder_Chart.pdf
M49Elliptical GalaxyVirgoM49_Finder_Chart.pdf
M50Open ClusterMonoceros M50_Finder_Chart.pdf
M51The Whirlpool Galaxy (Spiral Galaxy)Canes VenaticiM51_Finder_Chart.pdf
M52Open ClusterCassiopeiaM52_Finder_Chart.pdf
M53Globular ClusterComa BerenicesM53_Finder_Chart.pdf
M54Globular ClusterSagittariusM54_Finder_Chart.pdf
M55Globular ClusterSagittariusM55_Finder_Chart.pdf
M56Globular ClusterLyraM56_Finder_Chart.pdf
M57Ring Nebula (Planetary Nebula)LyraM57_Finder_Chart.pdf
M58Barred Spiral GalaxyVirgoM58_Finder_Chart.pdf
M59Elliptical GalaxyVirgoM59_Finder_Chart.pdf
M60Elliptical GalaxyVirgoM60_Finder_Chart.pdf
M61Barred Spiral GalaxyVirgoM61_Finder_Chart.pdf
M62Globular ClusterOphiuchusM62_Finder_Chart.pdf
M63The Sunflower Galaxy (Spiral Galaxy)Canes VenaticiM63_Finder_Chart.pdf
M64Black Eye Galaxy (Spiral Galaxy)Coma BerenicesM64_Finder_Chart.pdf
M65Spiral GalaxyLeoM65_Finder_Chart.pdf
M66Intermediate Spiral GalaxyLeoM66_Finder_Chart.pdf
M67Open ClusterCancerM67_Finder_Chart.pdf
M68Globular ClusterHydraM68_Finder_Chart.pdf
M69Globular ClusterSagittariusM69_Finder_Chart.pdf
M70Globular ClusterSagittariusM70_Finder_Chart.pdf
M71Globular ClusterSagitta M71_Finder_Chart.pdf
M72Globular ClusterAquariusM72_Finder_Chart.pdf
M73AsterismAquariusM73_Finder_Chart.pdf
M74Spiral GalaxyPiscesM74_Finder_Chart.pdf
M75Globular ClusterSagittariusM75_Finder_Chart.pdf
M76Little Dumbbell Nebula (Planetary Nebula)PerseusM76_Finder_Chart.pdf
M77Barred Spiral GalaxyCetusM77_Finder_Chart.pdf
M78Reflection NebulaOrionM78_Finder_Chart.pdf
M79Globular ClusterLepusM79_Finder_Chart.pdf
M80Globular ClusterScorpiusM80_Finder_Chart.pdf
M81Bode's Galaxy (Spiral Galaxy)Ursa MajorM81_Finder_Chart.pdf
M82Cigar Galaxy (Starburst Galaxy)Ursa MajorM82_Finder_Chart.pdf
M83Southern Pinwheel Galaxy (Barred Spiral Galaxy)HydraM83_Finder_Chart.pdf
M84Lenticular Galaxy or Elliptical GalaxyVirgoM84_Finder_Chart.pdf
M85Lenticular Galaxy or Elliptical GalaxyComa BerenicesM85_Finder_Chart.pdf
M86Lenticular Galaxy or Elliptical GalaxyVirgoM86_Finder_Chart.pdf
M87Elliptical GalaxyVirgoM87_Finder_Chart.pdf
M88Spiral GalaxyComa BerenicesM88_Finder_Chart.pdf
M89Elliptical GalaxyVirgoM89_Finder_Chart.pdf
M90Spiral GalaxyVirgoM90_Finder_Chart.pdf
M91Barred Spiral GalaxyComa BerenicesM91_Finder_Chart.pdf
M92Globular ClusterHerculesM92_Finder_Chart.pdf
M93Open ClusterPuppisM93_Finder_Chart.pdf
M94Cats Eye Galaxy (Spiral Galaxy)Canes VenaticiM94_Finder_Chart.pdf
M95Barred Spiral GalaxyLeoM95_Finder_Chart.pdf
M96Intermediate Spiral GalaxyLeoM96_Finder_Chart.pdf
M97Owl Nebula (Planetary Nebula)Ursa MajorM97_Finder_Chart.pdf
M98Spiral GalaxyComa BerenicesM98_Finder_Chart.pdf
M99Spiral GalaxyComa BerenicesM99_Finder_Chart.pdf
M100Spiral GalaxyComa BerenicesM100_Finder_Chart.pdf
M101Pinwheel Galaxy (Spiral Galaxy)Ursa MajorM101_Finder_Chart.pdf
M102Lenticular GalaxyDracoM102_Finder_Chart.pdf
M103Open ClusterCassiopeiaM103_Finder_Chart.pdf
M104Sombrero Galaxy (Spiral Galaxy)VirgoM104_Finder_Chart.pdf
M105Elliptical GalaxyLeoM105_Finder_Chart.pdf
M106Spiral GalaxyCanes VenaticiM106_Finder_Chart.pdf
M107Globular ClusterOphiuchusM107_Finder_Chart.pdf
M108Barred Spiral GalaxyUrsa MajorM108_Finder_Chart.pdf
M109Barred Spiral GalaxyUrsa MajorM109_Finder_Chart.pdf
M110Dwarf Elliptical GalaxyAndromedaM110_Finder_Chart.pdf

Sky Highlights - September 2017

Opposition
Neptune reaches opposition on September 5th

The Planets
This Month's Guide

Algol Minima
Algol eclipse dates and times for September

Northern Hemisphere
Evening
West:- Jupiter (mag. -1.7)
Southwest:- Saturn (mag. +0.5)
East:- Neptune (mag. +7.8)
Midnight
South:- Neptune
East:- Uranus (mag. +5.7)
Morning
West:- Neptune
South:- Uranus
East:- Venus (mag. -3.9), Mars (mag. +1.8) (from second week), Mercury (mag. +0.5 to -1.3) (from second week)

Southern Hemisphere
Evening
West:- Jupiter
Northwest:- Saturn
East:- Neptune
Midnight
West:- Saturn
North:- Neptune
Northeast:- Uranus
Morning
West:- Neptune
Northwest:- Uranus
Northeast:- Venus
East:- Mars (end of month)

Deep Sky

Small telescopes:-
Messier 13 - M13 - Great Hercules Globular Cluster
Messier 92 - M92 - Globular Cluster
Messier 11 - M11 - The Wild Duck Cluster (Open Cluster)
Messier 7 - M7 - The Ptolemy Cluster (Open Cluster)
Messier 6 - M6 - The Butterfly Cluster (Open Cluster)
Messier 4 - M4 - Globular Cluster
Messier 8 - M8 - Lagoon Nebula (Emission Nebula)
Messier 16 - M16 - Eagle Nebula (Emission Nebula with Open Cluster)
Messier 20 - M20 - Trifid Nebula (Emission and Reflection Nebula)

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