NGC1316 = Fornax A The FITS files NGC1316R.FIT and NGC1316O.FIT contain radio and optical images of the radio galaxy NGC1316 also known as Fornax A. This giant eliptical galaxy is the dominant member of a cluster of galaxies that can be seen in the optical image. Only one other galaxy in the image has detectable radio emission. The bright core of the radio source is coincident with the nucleus of the galaxy but the radio lobes extend far beyond the region of stars in the galaxy. Because the core of the radio source is so bright, the extended features are seen best if the range of pixel values (options menu in FITSview) 0 to 0.030 are displayed. These images have been adjusted such that corresponding pixels are aligned on the sky and can therefore be directly compared by blinking or other comparison techniques. The optical image is courtesy of E. B. Fomalont and the radio image is from the NRAO CD-Rom "Images from the Radio Universe" (available for US $10 from NRAO, 520 Edgemont Road, Charlottesville, VA 22903). The description of the radio image from the NRAO CD-Rom is as follows: Image Donor(s): E. B. Fomalont, K. A. Ebneter, W. J. M. van Breugel, R. D. Ekers Contact donor: E. B. Fomalont Mailing address: NRAO, 520 Edgemont Road, Charlottesville, VA 22903 Telephone: 804 296-0232 E-mail address: efomalon@nrao.edu Source or Image Name: Fornax A Alternate Names: NGC 1316 Description of Observation: (e.g., date of observation, telescope(s) used, frequencies, polarization type, resolution, deconvolution method): VLA 1.5 GHz continuum, 14 arcsec resolution Description of Image: (e.g., type of source, scientific reason for observing, notable source features) The maximum is 120 mJy/beam at the core, and the faintest features are about 1.0 mJy/beam. The rms noise in the center of each lobe is 0.15 mJy/beam. The core is slightly extended, and the lobes contain a wealth of detail. Other point sources are unrelated background sources, and the goat-head shape of the bright source, upper right, is caused by an instrumental artifact which occurs only at the edge of the image. Publication Reference(s): Fomalont, E. B., Ebneter, K. A., van Breugel, W. J. M., and Ekers, R. D. 1989, ApJL, 346, L17 Schulman, E., and Fomalont, E. B. 1992, AJ, 103, 1138