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Helix Nebula Context (VISTA and Webb)

This image of the Helix Nebula from the ground-based Visible and Infrared Telescope for Astronomy (left) shows the full view of the planetary nebula, with a box highlighting the smaller field of view from NASA’s James Webb Space Telescope’s NIRCam (right).
About the Object
- R.A. PositionR.A. PositionRight ascension – analogous to longitude – is one component of an object's position.22:29:36.3
- Dec. PositionDec. PositionDeclination – analogous to latitude – is one component of an object's position.-20:50:39.1
- ConstellationConstellationOne of 88 recognized regions of the celestial sphere in which the object appears.Aquarius
- 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.650 light-years
- DimensionsDimensionsThe physical size of the object or the apparent angle it subtends on the sky.Left image is about 25.7 arcminutes across (5 light-years) Right image is about 5.6 arcminutes across (1 light-year)
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.Left image was created from data taken by the Infrared Survey Telescope for Astronomy (VISTA)
Right image was created with Webb data from proposal: 6557 (M. Garcia Marin).
- InstrumentInstrumentThe science instrument used to produce the data.VISTA>VIRCAM Webb>NIRCam
- Exposure DatesExposure DatesThe date(s) that the telescope made its observations and the total exposure time.Webb> 24 October 2024
- FiltersFiltersThe camera filters that were used in the science observations.VISTA> Y, K, J Webb> F115W, F187N, F212N, F356W, F444W, F470N
- Object NameObject NameA name or catalog number that astronomers use to identify an astronomical object.Helix Nebula, NGC 7293
- Object DescriptionObject DescriptionThe type of astronomical object.Planetary Nebula
- Release DateJanuary 20, 2026
- Science ReleaseIntricacies of Helix Nebula Revealed With NASA’s Webb
- CreditImage: ESO, VISTA, NASA, ESA, CSA, STScI, J. Emerson (ESO); Acknowledgment: CASU

The right image is 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= F115W+F187N, Green= F212N+F356W, Red= F444W+F470N
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Laura Betz
NASA’s Goddard Space Flight Center
Greenbelt, Maryland
laura.e.betz@nasa.gov








