Lenticular (S0) Galaxy M84 (NGC 4374), type S0, in Virgo
RA 12 : 25.1 (h:m); DEC +12 : 53 (deg:m); Distance 60 million light years;
Visual Brightness 9.1 (mag); Apparent Dimension 5.0 (arc min)
M84 lies well in the heart of the Virgo Cluster of galaxies and forms a most conspicuous group with another giant, M84.
As a peculiar (but perhaps no way unique) feature, M84 contains a central machine which ejects two small but conspicuous jets, which can be seen in the radio light, as seen in the NRAO image published some time ago. This object was also target of a 1997 investigation of M84 by the Hubble Space Telescope, shortly after its second service mission (STS-82); it was found that the nucleus of M84 contains a massive central object of 300 million solar masses, concentrated in less than 26 light years from the galaxy's center.
Source and more: SEDS
M84 - M86 - NGC4387 - NGC44026: Galaxy Quartet in Virgo
March 31, 2009 19:54 - 21:35 UT.
Imaging: William Optics Zenithstar 80 ED II APO, f/6.8 [focal length 545 mm] with ATK16IC camera, Astronomik LRGB filters.
Exposures: Lum 2x180 and 12x300s [1x1]; RGB 5x120s [2x2]; all unguided.
March 19, 2007 22:57 - 23:06 UT.
Imaged with LX200 10-inch f/10 telescope with 0.33 Focal Reducer operating at f/4.06 [focal length 1015mm], Vesta Pro-SC3a b/w RAW mode, Baader Infra Red Blocking Filter.
14 unguided exposures of 15 seconds.