Copy of FITS image from the NRAO-VLA First Sky Survey
Showing the Locations of Natural Radio Sources within a Degree of 70
Virginis (A). The markers are added by the FITS Image Viewer
program.
Closeups of 70 Virginis Location and Radio Sources B and
C (More Colors Indicate a Stronger Radio Source)
Closeup of Radio Source D
Closeups of B,C, and D sources using field sizes of 0.1 degree by
0.1 degree, pixel sizes of 1 arcsecond by 1 arcsecond, and
stereographic projection. This gives FITS image downloads of around
600 kb. Source "B" has a strength of 37.4 mj and source "C" has a
strength of 1137 mj.
Source "D" has a strength of 1692 mj. The contour colors
are added in the FITS Image Viewer program.
These are some of the natural radio sources found within 1 degree
of 70 Virginis. The 40 foot radio telescope which I used previously
at Greenbank (see the link below) has a resolution of 1 degree and
these sources may not have had enough power to be apparent from the
40 foot. These images were made from the NRAO-VLA First Sky Survey
file which was originally in the FITS image format.
Learn more about the NRAO-VLA First Sky Survey by going to
the
To be able to do your own exploring of the VLA First Survey, it
is best to use a FITS Image Viewer on your computer although you can
download gif images. The FITS Image Viewer allows for the marking of
the exact coordinates of the objects in the graphic and for creating
the color contours. You can download a free copy for a Mac or PC
computer at
The FITS Image Viewer images can be seached the coordinates for
other objects in the field that you chose. You can find data on all
of the objects by going to the
