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Compass and Scale Image of Quasar Lenses

Compass and Scale Image of Quasar Lenses

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 image was created from Hubble data from proposal 12233: F. Courbin, G. Meylan, M. Tewes, and P. Jablonka (EPFL, Switzerland), S.G. Djorgovski and A. Mahabal (Caltech), P. Magain (Universite de Liege, Belgium), and D. Sluse (Bonn University, Germany). The science team includes: F. Courbin, C. Faure, F. Rerat, M. Tewes, and G. Meylan (EPFL, Switzerland), S.G. Djorgovski and A. Mahabal (Caltech), D. Stern (JPL), T. Boroson (NOAO), D. Sluse (Bonn University, Germany), and R. Dheeraj (University of Maryland).
  • Instrument
    InstrumentThe science instrument used to produce the data.
    HST>WFC3/UVIS
  • Exposure Dates
    Exposure DatesThe date(s) that the telescope made its observations and the total exposure time.
    February 26 - March 12, 2011
  • Filters
    FiltersThe camera filters that were used in the science observations.
    F475W (B), F814W (I)
  • Object Name
    Object NameA name or catalog number that astronomers use to identify an astronomical object.
    SDSS J0919+2720,SDSS J1005+4016,SDSS J0827+5224
  • Object Description
    Object DescriptionThe type of astronomical object.
    QSO gravitational lenses on background emission-line galaxies
  • Release Date
    March 15, 2012
  • Science Release
    Astronomers Using NASA’s Hubble Discover Quasars Acting as Gravitational Lenses
    Read the release
  • Credit
    Illustration: NASA, ESA, and Z. Levay (STScI); Science: NASA, ESA, and F. Courbin (EPFL, Switzerland)

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Compass and Scale Image of Quasar Lenses
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 separate exposures acquired by the WFC3 UVIS instrument. Several filters were used to sample various wavelength and energy 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: F475W (B) Orange: F814W (I)

Compass and Scale
Compass and ScaleAn astronomical image with a scale that shows how large an object is on the sky, a compass that shows how the object is oriented on the sky, and the filters with which the image was made.

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Quasar Lenses

Quasar Lenses

Astronomers using NASA's Hubble Space Telescope have found several examples of galaxies containing quasars, which act as gravitational lenses, amplifying and distorting images of galaxies aligned behind them. Quasars are among the brightest objects in the universe, far...

SDSS J0919+2720

SDSS J0919+2720

SDSS J1005+4016

SDSS J1005+4016

SDSS J0827+5224

SDSS J0827+5224

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Details

Last Updated
Mar 28, 2025
Contact
Media

Claire Andreoli
NASA’s Goddard Space Flight Center
Greenbelt, Maryland
claire.andreoli@nasa.gov

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