M81-M82 IFN

ObjetFiltresBinTemps PoseNombres PosesTemps Total
NomM 81 M82Luminance1 x 1120”2698,97 H
ConstellationGrande OurseRouge G75 O151 x 1120”973.24 H
Distance12 Millions ALVert G75 O151 x 1120”1183.93 H
Détail prise de vueBleu G75 O151 x 1120”1003.67 H
LieuAmeiria PortugalS2 G200 O601 x 1
Date acquisition07/03/21 au 12/05/21Hα G200 O601 x 1 180”1346,7 H
SetupO3 G200 O601 x 1
InstrumentFSQ 106Totaux71825,74 H
Diamètre106 mmBias1 x 199
Focale530 mmDark1 x 151
Rapport F/D5Flat1 x 111
MontureEQ6 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 ionised Hydrogen jets, 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: IFN (Integrated Flux Nebulea), a dusty gas in the foreground that belongs to our Galaxy.

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DECLINAISON:69°03′ 55s