M 81 M82 IFN

ObjetFiltresBinTemps PoseNombres PosesTemps Total
NomM 81 M 82Luminance1 x 1120”2698H97
ConstellationGrande OurseRouge
G75 O15
1 x 1120”973H24
Distance12 Millions AL Vert
G75 O15
1 x 1120”1183H93
Détail prise de vueBleu
G75 O15
1 x 1120”1003H67
LieuAmeiria Portugal

S21 x 1
Date acquisition07/03/2021 au 12/05/2021
G200 O60
1 x 1180”1346H70
SetupO31 X 1
InstrumentFSQ 106Totaux71825H74
Diamètre106 mmBias1 X 199
Focale530 mmDark1 X 151
Rapport F/D5Flat1 X 111
Monture EQ6 Pro SkywatcherAcquisition faite parTeam ARO
Caméra acquisitionZWO Asi 1600 MMTraitement fait parTeam ARO
Caméra de guidageLodestar X2Logiciels utilisés
Montage de guidageDO Starlight X pressAcquisitionTheSkyX , Focusmax, Maxpilote
Echantillonage1.48 arcsTraitementPixinsight, Photoshop


On the left, M81 (NGC 3031) is a spiral galaxy located in the Big Dipper constellation about 12.0 million light years from the Milky Way. Its diameter is relatively modest at only 87,000 light years.

 On the right, M82 (also known as NGC 3034 and the Cigar Galaxy) is a spiral galaxy located about 12.7 million light years away. It is a so-called starburst galaxy, as it has an exceptional rate of star formation, due to the gravitational interaction with M 81, and the rate of star formation is ten times greater than in an isolated galaxy.

In this picture we can see the jets of ionised hydrogen, perpendicular to the disc of the galaxy.

In the upper left corner we see Ngc 3077 at the same distance. It is also under the gravitational effects of the other two galaxies.

Also visible in the picture is the IFN (Integrated Flux Nebulea), a dusty gas in the foreground that belongs to our Galaxy.

Messier 78 (or NGC 2068), a diffuse starburst in the constellation Orion, is 1600 light years away. It is a cloud of interstellar dust illuminated by young stars.  This region is a veritable nursery of stars, with several dozen stars in formation, betrayed by powerful jets of hydrogen characteristic of their youth.

It is the brightest diffuse nebula in a group of nebulae that includes NGC 2064 and NGC 2067

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DÉCLINAISON:+69°03′ 55s