martinsastro

Astronomy for all.
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Lester.jpg

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Dargo to Licola


IMG_0518.jpg

18 files, last one added on May 21, 2016
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Camper trailer files.



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NGC4945.jpg
NGC4945.jpgNGC4945.1045 viewsNGC4945 with the Supernova.Martin
Lagoondone2Mb.jpg
Lagoondone2Mb.jpgLagoon nebula647 viewsDone with the ED100 and Hutech FR/FF.Martin
Nick.jpg
Nick.jpg420 viewsSrike the pose Niko.Martin
Pier.jpg
Pier.jpg431 viewsMartin
rosettecropfinal.jpg
rosettecropfinal.jpgRosette nebula.481 viewsThe cluster and nebula lie at a distance of some 5,200 light years from Earth (although estimates of the distance vary considerably) and measure roughly 130 light years in diameter. The radiation from the young stars excite the atoms in the nebula, causing them to emit radiation themselves producing the emission nebula we see. The mass of the nebula is estimated to be around 10,000 solar masses.

It is believed that stellar winds from a group of O and B stars are exerting pressure on interstellar clouds to cause compression, followed by star formation in the nebula. This star formation is currently still ongoing.

A survey of the nebula with the Chandra X-ray Observatory in 2001 has revealed the presence of very hot, young stars at the core of the Rosette Nebula. These stars have heated the surrounding gas to a temperature in the order of 6 million kelvins causing them to emit copious amounts of X-rays.
Martin
1123_and_1124.jpg
1123_and_1124.jpgAr1123 and 1124.500 viewsMartin
centaurus-A.jpg
centaurus-A.jpgCentaurus A.514 viewsThe Centaurus A/M83 Group is a complex group of galaxies in the constellations Hydra, Centaurus, and Virgo. The group may be roughly divided into two subgroups. The Cen A Subgroup, at a distance of 11.9 Mly (3.66 Mpc), is centered around Centaurus A, a nearby radio galaxy.[3] The M83 Subgroup, at a distance of 14.9 Mly (4.56 Mpc), is centered around the Messier 83 (M83), a face-on spiral galaxy.[3]

This group is sometimes identified as one group[4][5] and sometimes identified as two groups.[6] Hence, some references will refer to two objects named the Centaurus A Group and the M83 Group. However, the galaxies around Centaurus A and the galaxies around M83 are physically close to each other, and both subgroups appear not to be moving relative to each other.[3]

The Centaurus A/M83 Group is part of the Virgo Supercluster, the local supercluster of which the Local Group is an outlying member.
Martin
Centaurusdone1.jpg
Centaurusdone1.jpgCentaurus A.422 viewsThe Centaurus A/M83 Group is a complex group of galaxies in the constellations Hydra, Centaurus, and Virgo. The group may be roughly divided into two subgroups. The Cen A Subgroup, at a distance of 11.9 Mly (3.66 Mpc), is centered around Centaurus A, a nearby radio galaxy.[3] The M83 Subgroup, at a distance of 14.9 Mly (4.56 Mpc), is centered around the Messier 83 (M83), a face-on spiral galaxy.[3]

This group is sometimes identified as one group[4][5] and sometimes identified as two groups.[6] Hence, some references will refer to two objects named the Centaurus A Group and the M83 Group. However, the galaxies around Centaurus A and the galaxies around M83 are physically close to each other, and both subgroups appear not to be moving relative to each other.[3]

The Centaurus A/M83 Group is part of the Virgo Supercluster, the local supercluster of which the Local Group is an outlying member.
Martin

Last additions
IMG_0518.jpg
IMG_0518.jpgnice view333 viewsnice viewMartinMay 21, 2016
IMG_0517.jpg
IMG_0517.jpgARB Kev394 viewsARB Kev.MartinMay 21, 2016
IMG_0516.jpg
IMG_0516.jpg264 viewsKev's CarMartinMay 21, 2016
IMG_0515.jpg
IMG_0515.jpg272 viewsJacki and carMartinMay 21, 2016
IMG_0514.jpg
IMG_0514.jpg271 viewsAlex's carMartinMay 21, 2016
IMG_0513.jpg
IMG_0513.jpg268 viewsScotty's carMartinMay 21, 2016
IMG_0512.jpg
IMG_0512.jpg277 viewsMark beside his carMartinMay 21, 2016
IMG_0511.jpg
IMG_0511.jpg272 viewsHang this in the ceiling and Mark will be out of business :PMartinMay 21, 2016