afesan Posted April 24, 2015 Report Share Posted April 24, 2015 ASA N12, DDM85, FLI ML8300 * L:582m R: 180m G:170m B:190m * Unguided all subframes * Taken automatically with Sequence (Beta) version, Autoslew (Beta) and MaximDL A 2678x2000 picture can be seen here: http://afesan.es/Deepspace/NGC%204151%20(Eye%20of%20Sauron),NGC%204156%20(Canes%20Venatici)_jpg_orig.html NGC 4151 is an intermediate spiral Seyfert galaxy located 43 million light-years from Earth, in the onstellation Canes Venatici. The galaxy was first mentioned by William Herschel on March 17, 1787; it was one of the two Seyfert galaxies described in the paper which defined the term. It is one of the nearest galaxies to Earth to contain an actively growing supermassive black hole; it was speculated that the nucleus may host a binary black hole, with about 40 million and about 10 million solar masses respectively, orbiting with a 15.8-year period. This is, however, still a matter of active debate. Some astronomers nickname it the "Eye of Sauron" from its appearance. X-ray source Astronomers using data from the European Space Agency’s XMM-Newton satellite have found a long-sought X-ray signal from NGC 4151. When the black hole’s X-ray source flares, its accretion disk reflects the emission about half an hour later. A litte tidal tail can be seen into the bottom of the galaxy...and also in the spiral galaxy NGC 4156.. Credits NASA & Wikipedia Link to comment Share on other sites More sharing options...
MarkS Posted April 25, 2015 Report Share Posted April 25, 2015 Antonio, excellent image. Regards, Mark Link to comment Share on other sites More sharing options...
afesan Posted May 27, 2015 Author Report Share Posted May 27, 2015 Thanks, Mark !..sorry for this late post ... Link to comment Share on other sites More sharing options...
rbrecher Posted June 5, 2015 Report Share Posted June 5, 2015 very nice! Link to comment Share on other sites More sharing options...
afesan Posted June 5, 2015 Author Report Share Posted June 5, 2015 Glad you like it ! Link to comment Share on other sites More sharing options...
astrosirius Posted June 10, 2015 Report Share Posted June 10, 2015 Great image Antonio!! Best regards from China!! Luis Romero http://www.flickr.com/photos/llromero/ Link to comment Share on other sites More sharing options...
afesan Posted June 10, 2015 Author Report Share Posted June 10, 2015 You are very kind, Luis Link to comment Share on other sites More sharing options...
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