M81, M82 and NGC 3077 galaxies lay some 12 million light-years away from Earth in the constellation of the Great Bear (Ursa Major). The triplet are strongly interacting with each other. Observations of the 21-centimeter hydrogen line suggest that this gravitational link exists among them.
Integrated Flux Nebula (IFN) can be seen around the galaxies. This faint glow is caused by the combined light of the stars of the Milky Way reflected and re-emitted by interestellar gas and dust.
RGB: 20×180″ each channel
All images at 0Gain -20ºC bin1
Calibrated with 30 flats, 30 darks, 50 bias
Total exposure: 11h55’
Average darkness: 20.80 mag/arcsec2
Image resolution: 1.74”/pixel
ASI1600MM Pro camera with ZWO EFW 8 pos
Guiding with ASI174MC and ZWO OAG
SGP, PHD2, APP, PIX.
Aleix Roig – Prades, Tarragona (Catalonia, Spain), February 2021.
I captured this image despite the bad weather conditions that affected my location the last new moon days. For me it is a special image because it’s the last light of my ASI1600MM-Pro, the camera that brought me many great moments. I hope I can get a better image of this triplet in a near future.