Images of Pandora’s Cluster, Abell 2744, captured by Webb’s Near-Infrared Camera (NIRCam), with compass arrows, scale bar, and color key for reference.
The north and east compass arrows show the orientation of the image on the sky. Note that the relationship between north and east on the sky (as seen from below) is flipped relative to direction arrows on a map of the ground (as seen from above).
The scale bar is labeled in arc seconds, which is a measure of angular distance on the sky. One arc second is equal to 1/3600 of one degree of arc. (The full Moon has an angular diameter of about 0.5 degrees.) The actual size of an object that covers one arc second on the sky depends on its distance from the telescope.
This image shows invisible near-infrared wavelengths of light that have been translated into visible-light colors. The color key shows which NIRCam filters that were used when collecting the light. The color of each filter name is the visible light color used to represent the infrared light that passes through that filter.
Click here for a full description of the image.
Credits
Science
NASA, ESA, CSA, Tommaso Treu (UCLA)
Image Processing
Zolt G. Levay (STScI)
| About The Object | |
|---|---|
| Object Name | Abell 2744, Pandora's Cluster |
| Object Description | Galaxy cluster/gravitational lens and high redshift galaxy candidates |
| R.A. Position | 00:14:22.63 |
| Dec. Position | -30:23:44.50 |
| Constellation | Sculptor |
| Distance | The distance to the cluster is 4 billion light-years. |
| About The Data | |
| Data Description | This image was created from JWST data from proposal: (T. Treu) |
| Instrument | NIRCam |
| Exposure Dates | 28-29 June 2022 |
| Filters | F090W, F115W, F150W, F200W, F277W, F356W, F444W |
| About The Image | |
| Color Info | These images are a composite of separate exposures acquired by the James Webb Space Telescope using the NIRCam instrument. Several filters were used to sample different infrared wavelength ranges. 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: Blue: F090W, F115W Cyan: F150W Green: F220W Yellow: F277W Orange: F356W Red: F444W |
| 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. |
