File:Abell 2744 GLASS Compass (NIRCam Image) (2022-044-01GG7TP0GV8QH59MRKGQ0TMRE6).png

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English: 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.

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Date 17 November 2022 (upload date)
Source Abell 2744 GLASS Compass (NIRCam Image)
Author SCIENCE: NASA, ESA, CSA, Tommaso Treu (UCLA) IMAGE PROCESSING: Zolt G. Levay (STScI)
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Public domain This file is in the public domain because it was created by NASA, ESA and CSA. NASA Webb material is copyright-free and may be freely used as in the public domain without fee, on the condition that only NASA, STScI, and/or ESA/CSA is credited as the source of the material. This license does not apply if source material from other organizations is in use.
The material was created for NASA by Space Telescope Science Institute under Contract NAS5-03127. Copyright statement at webbtelescope.org. For material created by the European Space Agency on the esawebb.org site, use the {{ESA-Webb}} tag.

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