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IC 348 (NIRCam Compass Image)
This image of star cluster IC 348, captured by Webb’s Near-Infrared Camera (NIRCam), shows 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 light-years, which is the distance that light travels in one Earth-year. (It takes 0.1 years for light to travel a distance equal to the length of the scale bar.) One light-year is equal to about 5.88 trillion miles or 9.46 trillion kilometers. The field of view shown in this image is approximately 0.5 light-years across and 0.8 light-years high.
This image shows invisible near-infrared wavelengths of light that have been translated into visible-light colors. The color key shows which NIRCam filters 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.
About the Object
- R.A. PositionR.A. PositionRight ascension – analogous to longitude – is one component of an object's position.03:44:34.28
- Dec. PositionDec. PositionDeclination – analogous to latitude – is one component of an object's position.+32:09:43.10
- ConstellationConstellationOne of 88 recognized regions of the celestial sphere in which the object appears.Perseus
- DistanceDistanceThe 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.About 1,000 lightyears
- DimensionsDimensionsThe physical size of the object or the apparent angle it subtends on the sky.This image is about 1.9 arcminutes across (.6 lightyears)
About the Data
- Data DescriptionData DescriptionProposal: A description of the observations, their scientific justification, and the links to the data available in the science archive.
Science Team: The astronomers who planned the observations and analyzed the data. "PI" refers to the Principal Investigator.This image was created with Webb data from proposal: 1229 (C. Alves de Oliveira). Image Processing: Alyssa Pagan (STScI)
- InstrumentInstrumentThe science instrument used to produce the data.NIRCam
- Exposure DatesExposure DatesThe date(s) that the telescope made its observations and the total exposure time.28 August 2022
- FiltersFiltersThe camera filters that were used in the science observations.F277W, F360M, F444W
- Object NameObject NameA name or catalog number that astronomers use to identify an astronomical object.IC 348
- Object DescriptionObject DescriptionThe type of astronomical object.Star-forming region
- Release DateDecember 13, 2023
- Science ReleaseNASA’s Webb Identifies Tiniest Free-Floating Brown Dwarf
- CreditImage: NASA, ESA, CSA, STScI, Kevin Luhman (PSU), Catarina Alves de Oliveira (ESA)
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 specific 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: F277W, Green: F360M, Red: F444W
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IC 348 (NIRCam Image)
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Laura Betz
NASA’s Goddard Space Flight Center
Greenbelt, Maryland
laura.e.betz@nasa.gov
NASA, ESA, CSA, STScI, Kevin Luhman (PSU), Catarina Alves de Oliveira (ESA)
