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Extended Groth Strip (Hubble)

Thin horizontal Hubble image of tens of thousands of distant galaxies set against the black background of space. Most appear only as tiny dots in shades of red, orange, and white.

This image from the Hubble Space Telescope shows a part of the sky known as the Extended Groth Strip (EGS). The CEERS Survey researchers will use the James Webb Space Telescope to observe the Extended Groth Strip in infrared light. Their observations employ three of the telescope’s instruments and will provide both images and spectra of the objects in the field — which includes at least 50,000 galaxies — helping to expand what we know about galaxies in the very early universe.

About the Object

  • R.A. Position
    R.A. PositionRight ascension – analogous to longitude – is one component of an object's position.
    14h 16m 59.99s
  • Dec. Position
    Dec. PositionDeclination – analogous to latitude – is one component of an object's position.
    52° 30' 0.0"
  • Constellation
    ConstellationOne of 88 recognized regions of the celestial sphere in which the object appears.
    Ursa Major
  • Dimensions
    DimensionsThe physical size of the object or the apparent angle it subtends on the sky.
    The Extended Groth Strip is 1.1 degrees long by 0.15 degrees wide (70.5 x 10.1 arcminutes, respectively).

About the Data

  • Data Description
    Data 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.
    The Hubble image was created from HST data from proposal 10134: M. Davis (University of California, Berkeley), M. Ashby (Harvard-Smithsonian Center for Astrophysics), T. Small (California Institute of Technology), P. Guhathakurta (University of California, Santa Cruz), L. Simard (Dominion Astrophysical Observatory), K. Noeske (University of California, Santa Cruz), S. Kwok, J. Mader, and P. Amico (California Association for Research in Astronomy (CARA)), A. Koekemoer and R. Somerville (STScI), S. Faber (University of California, Santa Cruz), J. Newman (Lawrence Berkeley National Laboratory), D. Koo (University of California, Santa Cruz), S. White, G. Kauffmann, and V. Springel (Max Planck Institute for Astrophysics, Garching), M. Cooper (University of California, Berkeley), A. Metevier and B. Weiner (University of California, Santa Cruz), and K. Bundy (California Institute of Technology).
  • Instrument
    InstrumentThe science instrument used to produce the data.
    HST>ACS/WFC
  • Exposure Dates
    Exposure DatesThe date(s) that the telescope made its observations and the total exposure time.
    June 2004 to March 2005
  • Filters
    FiltersThe camera filters that were used in the science observations.
    F606W (V) and F814W (I)
  • Object Name
    Object NameA name or catalog number that astronomers use to identify an astronomical object.
    Extended Groth Strip (EGS)
  • Object Description
    Object DescriptionThe type of astronomical object.
    Optical Survey
  • Release Date
    June 24, 2020
  • Science Release
    Mapping the Early Universe with NASA’s Webb Telescope
    Read the release
  • Credit
    Image: NASA, ESA, M. Davis

Downloads

  • Full Res (For Print), 5600 × 40000
    tif (640.88 MB)
  • Full Res (For Display), 5600 × 40000
    png (480.89 MB)
  • Half Res, 2800 × 20000
    png (104.28 MB)
  • Quarter Res, 1400 × 10000
    png (23.69 MB)
  • 560 × 4000
    png (3.4 MB)
Thin horizontal Hubble image of tens of thousands of distant galaxies set against the black background of space. Most appear only as tiny dots in shades of red, orange, and white.
Color Info
Color InfoA brief description of the methods used to convert telescope data into the color image being presented.

This image is a composite of many separate exposures made by the ACS instrument on the Hubble Space Telescope using two different filters to sample broad wavelength ranges. The color results from assigning different hues (colors) to each monochromatic image. In this case, the assigned colors are: Blue: F606W (V) Green: F606W (V) + F814W (I) Red: F814W (I)

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Details

Last Updated
Aug 28, 2025
Contact
Media

Laura Betz
NASA’s Goddard Space Flight Center
Greenbelt, Maryland
laura.e.betz@nasa.gov

Image Credit

NASA, ESA, M. Davis

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