Weird Science

The Origin and Structure of the Messier Catalog

Polish ver­sion is here

The Mes­sier Cata­log is one of the most renow­ned com­pi­la­tions of astro­no­mi­cal objects, whose first ver­sion was publi­shed by Char­les Mes­sier in 1774. The idea of cata­lo­ging these objects occur­red to the French astro­no­mer while pre­pa­ring to obse­rve the return of Hal­ley’s Comet, pre­dic­ted for 1759. While survey­ing the night sky, Mes­sier enco­un­te­red an object resem­bling a small, hazy spo­t—si­mi­lar in appe­a­rance to a distant comet. Howe­ver, unlike a comet, it did not move rela­tive to the back­gro­und stars. Fur­ther inve­sti­ga­tion led Mes­sier to disco­ver nume­rous other faint, nebu­lous objects scat­te­red across the cele­stial sphere. Because their resem­blance to comets could hin­der comet-hun­ting efforts, Mes­sier deci­ded to cata­log these objects, assi­gning each a con­se­cu­tive num­ber pre­ce­ded by the let­ter "M." The afo­re­men­tio­ned object was later iden­ti­fied as the Crab Nebula and rece­i­ved the desi­gna­tion M1. The final ver­sion of Mes­sier’s ori­gi­nal cata­log was publi­shed in 1784, listing 103 objects. Sub­se­qu­en­tly, seven addi­tio­nal objects were added, brin­ging the cur­rent ver­sion of the cata­log to a total of 110 entries. Nota­bly, eight of these objects lie within the boun­da­ries of the con­stel­la­tion Ursa Major.

Altho­ugh Mes­sier him­self was a dedi­ca­ted obse­rver, the tech­ni­cal limi­ta­tions of his instru­ments pre­ven­ted him from fully under­stan­ding the true nature of the objects he cata­lo­ged. Com­pre­hen­sive know­ledge of their pro­per­ties only became pos­si­ble in the 20th cen­tury, thanks to advan­ces in tech­no­logy and the deve­lop­ment of mul­ti­ple bran­ches of astro­nomy.

Despite the disco­very of nume­rous addi­tio­nal cele­stial bodies descri­bed in more modern cata­logs, the objects listed in Mes­sier’s cata­log con­ti­nue to cap­ti­vate ama­teur astro­no­mers. The rea­son is sim­ple: Mes­sier’s objects are among the bri­gh­test and most easily obse­rved, as they had to be detec­ta­ble with the rela­ti­vely pri­mi­tive tele­scope ava­i­la­ble to the astro­no­mer in the 18th cen­tury.

Cosmic Explo­ra­tion

Here, I pre­sent my ver­sion of the cata­log. This sec­tion fea­tu­res only pho­to­gra­phs of Mes­sier objects that I have per­so­nally cap­tu­red. Each image serves as a link to an article pro­vi­ding a deta­i­led descrip­tion of the object, along with addi­tio­nal pho­to­gra­phs (some objects are gro­u­ped toge­ther for various rea­sons). Addi­tio­nally, I have intro­du­ced my own custom sym­bo­lic anno­ta­tions to help quic­kly iden­tify the type of object depic­ted.

We now under­stand that the cata­log encom­pas­ses a diverse array of cele­stial objects, which inc­lude:

M1 ㊂ Ilustracja M2 ⁂ M3 ⁂ Ilustracja M4 ⁂ M5 ⁂ M6 ⁂ M7 ⁂ M8 ◍ Ilustracja
M9 ⁂ M10 ⁂ M11 ⁂ M12 ⁂ M13 ⁂ Ilustracja M14 ⁂ M15 ⁂ M16 ◍
M17 ◍ M18 ⁂ M19 ⁂ M20 ◍ Ilustracja M21 ⁂ Ilustracja M22 ⁂ M23 ⁂ Ilustracja M24 ⠿
M25 ⁂ M26 ⁂ M27 ⍟ Ilustracja M28 ⁂ M29 ⁂ M30 ⁂ M31 ❃ Ilustracja M32 ❃ Ilustracja
M33 ❃ M34 ⁂ Ilustracja M35 ⁂ M36 ⁂ M37 ⁂ M38 ⁂ M39 ⁂ M40 ٭٭ Ilustracja
M41 ⁂ M42 ◍ Ilustracja M43 ◍ Ilustracja M44 ⁂ M45 ⁂Ilustracja M46 ⁂ M47 ⁂ M48 ⁂
M49 ❃ M50 ⁂ M51 ❃ Ilustracja M52 ⁂ M53 ⁂ M54 ⁂ M55 ⁂ M56 ⁂
M57 ⍟ Ilustracja M58 ❃ M59 ❃ M60 ❃ M61 ❃ M62 ⁂ M63 ❃ Ilustracja M64 ❃
M65 ❃ M66 ❃ M67 ⁂ M68 ⁂ M69 ⁂ M70 ⁂ M71 ⁂ M72 ⁂
M73 ⁂ M74 ❃ M75 ⁂ M76 ⍟ Ilustracja M77 ❃ M78 ◍ M79 ⁂ M80 ⁂
M81 ❃ Ilustracja M82 ❃ Ilustracja M83 ❃ M84 ❃ M85 ❃ M86 ❃ M87 ❃ M88 ❃
M89 ❃ M90 ❃ M91 ❃ M92 ⁂ M93 ⁂ M94 ❃ Ilustracja M95 ❃ M96 ❃
M97 ⍟ Ilustracja M98 ❃ M99 ❃ M100 ❃ M101 ❃ Ilustracja M102 ❃ M103 ⁂ M104 ❃ Ilustracja
M105 ❃ M106 ❃ M107 ⁂ M108 ❃ M109 ❃ M110 ❃ Ilustracja

My cata­log will be gra­du­ally upda­ted with new pho­to­gra­phs and their descrip­tions.

Marek Ples

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