martinsastro

Astronomy for all.
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Dazza_and_my_scope_on_right.jpg
Dazza_and_my_scope_on_right.jpg4492 viewsMartin
Sombrerocropdone.jpg
Sombrerocropdone.jpgSombrero galaxy1121 viewsThe Sombrero Galaxy (also known as M104 or NGC 4594) is an unbarred spiral galaxy in the constellation Virgo located 28 million light years from Earth. It has a bright nucleus, an unusually large central bulge, and a prominent dust lane in its inclined disk. The dark dust lane and the bulge give this galaxy the appearance of a sombrero. Astronomers initially thought that the halo was small and light, indicative of a spiral galaxy. But Spitzer found that halo around the Sombrero Galaxy is larger and more massive than previously thought, indicative of a giant elliptical galaxy. [5] The galaxy has an apparent magnitude of +9.0, making it easily visible with amateur telescopes. The large bulge, the central supermassive black hole, and the dust lane all attract the attention of professional astronomers.Martin
6067_done.jpg
6067_done.jpgNGC6067.672 viewsNGC 6067 is a bright open cluster deep South in the Constellation of Norma. Because it is located in the same plane of the Milky Way it has a dense star background. A nice target for small telescopes even from urban skies. The cluster contains about 100 stars between 8 magnitude and fainter.Martin
CentAfinal2G.jpg
CentAfinal2G.jpgCentaurus A658 views10 X 5 Min RGB and 15 X 10 Min Luminance.
Martin
Group1-L_flattener.jpg
Group1-L_flattener.jpgwith flattener652 viewsMartin
Lagoon-L.jpg
Lagoon-L.jpgNo flattener650 viewsMartin
NGC4945.jpg
NGC4945.jpgNGC4945.650 viewsNGC4945 with the Supernova.Martin
testing.jpg
testing.jpgtestimage596 views2X30Seconds at ISO1600Martin
LEO.jpg
LEO.jpgThe Leo trio.578 viewsThis is a composition of 15X600 Seconds Luminance and 10X300 Seconds RGB each.Martin
m42done.jpg
m42done.jpgM42.536 viewsThe Orion Nebula (also known as Messier 42, M42, or NGC 1976) is a diffuse nebula situated south of Orion's Belt. It is one of the brightest nebulae, and is visible to the naked eye in the night sky. M42 is located at a distance of 1,344 ± 20 light years[2][5] and is the closest region of massive star formation to Earth. The M42 nebula is estimated to be 24 light years across. Older texts frequently referred to the Orion Nebula as the Great Nebula in Orion or the Great Orion Nebula.

The Orion Nebula is one of the most scrutinized and photographed objects in the night sky, and is among the most intensely studied celestial features.[6] The nebula has revealed much about the process of how stars and planetary systems are formed from collapsing clouds of gas and dust. Astronomers have directly observed protoplanetary disks, brown dwarfs, intense and turbulent motions of the gas, and the photo-ionizing effects of massive nearby stars in the nebula. There are also supersonic "bullets" of gas piercing the dense hydrogen clouds of the Orion Nebula. Each bullet is ten times the diameter of Pluto's orbit and tipped with iron atoms glowing bright blue. They were probably formed one thousand years ago from an unknown violent event.
Martin
Tarantula-done.jpg
Tarantula-done.jpgTarantula nebula.509 viewsThe Tarantula Nebula (also known as 30 Doradus, or NGC 2070) is an H II region in the Large Magellanic Cloud. It was originally thought to be a star, but in 1751 Nicolas Louis de Lacaille recognized its nebular nature.

The Tarantula Nebula has an apparent magnitude of 8. Considering its distance of about 49 kpc[2] (160,000 light years), this is an extremely luminous non-stellar object. Its luminosity is so great that if it were as close to Earth as the Orion Nebula, the Tarantula Nebula would cast shadows. In fact, it is the most active starburst region known in the Local Group of galaxies. It is also the largest such region in the Local Group with an estimated diameter of 200 pc.[3] The nebula resides on the leading edge of the LMC, where ram pressure stripping, and the compression of the interstellar medium likely resulting from this, is at a maximum. At its core lies the compact star cluster R136 (approx diameter 35 light years)[4] that produces most of the energy that makes the nebula visible. The estimated mass of the cluster is 450,000 solar masses, suggesting it will likely become a globular cluster in the future.
Martin
Eta_Carinae_done_ha2Mb.jpg
Eta_Carinae_done_ha2Mb.jpgEta Carinae with the EQ8 mount.479 viewsMartin
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