This VLA radio composite image shows the active galaxy 3C 348, also known as Hercules A. The VLA data, which record frequencies from 4-9 GHz, were taken in 2010-2011.
Credits
R. Perley and W. Cotton (NRAO/AUI/NSF)| About The Object | |
|---|---|
| Object Name | Hercules A, Herc A, 3C 348 |
| Object Description | Active Galaxy; Radio Galaxy |
| R.A. Position | 16h 51m 8.14s |
| Dec. Position | 04° 59' 33.32" |
| Constellation | Hercules |
| Distance | 2.1 billion light-years (637 million parsecs or redshift z = 0.156) |
| About The Data | |
| Data Description | The image was created from Hubble data from proposal : S. Baum and C. O'Dea (Rochester Institute of Technology) and J. Stoke and F. Lo (Associated Universities, Inc.). Notes:The VLA data are from the National Radio Astronomy Observatory observation project TDEM0011: R. Perley, W. Cotton, and U. Rao (NRAO/AUI/NSF). These data were taken August 2010 through September 2011. Frequencies 4-9 GHz were measured. |
| Instrument | National Radio Astronomy Observatory VLA |
| Filters | C Band Low (4-6 GHz), C Band High (6-8 GHz), and X Band Low (8-9 GHz) |
| About The Image | |
| Color Info | This image is a composite of separate exposures acquired by the VLA. Several filters were used to sample various wavelengths/frequencies. The color results from assigning different hues (colors) to each monochromatic (grayscale) image associated with an individual filter. In this case, the assigned colors are: Red: VLA C Band Low (4-6 GHz) Green: VLA C Band High (6-8 GHz) Blue: VLA X Band Low (8-9 GHz) |
| About The Object | |
|---|---|
| Object Name | A name or catalog number that astronomers use to identify an astronomical object. |
| Object Description | The type of astronomical object. |
| R.A. Position | Right ascension – analogous to longitude – is one component of an object's position. |
| Dec. Position | Declination – analogous to latitude – is one component of an object's position. |
| Constellation | One of 88 recognized regions of the celestial sphere in which the object appears. |
| Distance | The physical distance from Earth to the astronomical object. Distances within our solar system are usually measured in Astronomical Units (AU). Distances between stars are usually measured in light-years. Interstellar distances can also be measured in parsecs. |
| Dimensions | The physical size of the object or the apparent angle it subtends on the sky. |
| About The Data | |
| Data Description |
|
| Instrument | The science instrument used to produce the data. |
| Exposure Dates | The date(s) that the telescope made its observations and the total exposure time. |
| Filters | The camera filters that were used in the science observations. |
| About The Image | |
| Image Credit | The primary individuals and institutions responsible for the content. |
| Publication Date | The date and time the release content became public. |
| Color Info | A brief description of the methods used to convert telescope data into the color image being presented. |
| Orientation | The rotation of the image on the sky with respect to the north pole of the celestial sphere. |
