Elliptical Galaxy M-84 ( NGC 4374 )
This is a 10 minute exposure with an
ST-6 CCD camera thru Kopernik's 20-inch telescope. The field of view is
about 5x7 arc minutes, with north to the left.
Quote from the Deep
Sky Field Guide to Uranometria 2000:
M-84 is usually considered an elliptical
system of type E1. However a number of unusual features of this galaxy
have convinced many astronomers that it is actually a face-on lenticular
galaxy. M-84 is a classical double lobed radio galaxy, with extensive jets
of electrons spewing out of its center in opposite directions. It has a
prominent skewed dust lane in its central region associated with ionized
gas (see Hubble Space Telescope image
& press release
on this dust ring and indications of a central black hole). The orientation
of the dust lane is perpendicular to that of the radio emission. M-84 has
also been detected in infrared (dust) and has a single X-ray jet shooting
out from its nucleus..
Very bright center, smooth nebulosity.
Quote by Charles
Messier (March 18th, 1781): “Nebula
without star in Virgo. In the center it is pretty bright and surrounded
with a slight nebulosity. The brightness and general appearance are similar
to M-59 and
M-84 forms a close pair with M-86,
making up the western portion of the "core" of the Virgo Galaxy Cluster.
With small to moderate sized telescopes these two galaxies can be seen
in the same eyepiece field.
M-84, NGC 4374
Dec: +12° 53' 15" Epoch 2000
Size (mins): 6.4' x 5.6'
George Normandin, KAS
June 1st, 2000