M81and 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


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

The arms of the Galaxy contain young, very hot (blue) stars formed over the past million years. M81 also has beautiful star-forming regions in its spiral arms. These regions correspond to the ‘red’ zones. The central bulge contains the oldest stars.

This image is a crop of our M81-M82 and IFN image

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DECLINAISON:69°03′ 55s