Galassia di Bode M81
6 Agosto 2021 Galaxies
La Galassia di Bode, (nota anche come M 81 o NGC 3031) è una galassia a spirale situata a circa 12 milioni di anni luce dalla Terra, nella costellazione boreale dell’Orsa Maggiore.
Note dell’autore:
The Bode galaxy is presumed to contain approximately 250 billion stars, being slightly smaller than the Milky Way. The galaxy is one of the best examples of spiral design in a galaxy, with nearly perfect arms spiraling toward its center. The Bode galaxy and its satellite (or binary galaxy), the Cigar Galaxy, or M82, are among the most prominent members of the M81 Group. Both are visible in the same field of view for most telescopes.
Bode’s galaxy has an apparent magnitude of 6.93, making it one of the brightest galaxies. Under exceptional conditions and truly dark skies in remote locations, away from light pollution, it can be seen with the naked eye.
Its center presents a characteristic bulge that has been explained either as a consequence of the collision with a neighboring galaxy that caused clouds of interstellar gas and dust to have compressed, collapsing to produce massive high-temperature stars, or due to the existence of a quasar. at its center, with a weakened supermassive black hole that produced a lower brightness than quasars, but greater than typical in cores of spiral galaxies. There is evidence to support this latest version provided by radio telescopes that indicate that the nucleus is characterized by being small and very dense, from which jets of hot gas are emitted at high speed, possibly generated by the magnetic field around the black hole.
OBSERVATORY FARLIGHTTEAM:
Takahashi FSQ-106 f/5 530mm
CCD QSI 683ws8
Mount 10 Micron 1000
Rotator Pegasus-MGPBox-PowerBox-
Voyager software – MountWizar – PixInsight – Adobe PS
Luminance 90 shots of 900 (22`5 hours)
Halfa 56 shots of 900 (14 hours)
Halfa 16 takes of 1200 (5 and a half hours)
RGB 12 shots for each 600 channel (2 hours for each channel in RGB)
Total 48 hours of lights
Darks 60 x900 “+ 60×1200″ + 60×600 ”
Bias 202
Flats 60xL + 60xHa + 60xR + 60xG + 60xB
Author: Far Light Team