Compass and Scale Image for Abell 1689 (Hubble ACS/WFC)

Compass and Scale Image for Abell 1689 (Hubble ACS/WFC)

Credits

NASA, ESA, E. Jullo (Jet Propulsion Laboratory), P. Natarajan (Yale University), and J.-P. Kneib (Laboratoire d'Astrophysique de Marseille, CNRS, France)

About The Object
Object Name Abell 1689
Object Description Galaxy Cluster
R.A. Position 13h 11m 29.5s
Dec. Position -1° 20' 17.01"
Constellation Virgo
Distance The distance to the lensing cluster is 2.2 billion light-years (675 megaparsecs). The distance to the lensed galaxy is about 12.8 billion light-years.
About The Data
Data Description ACS/WFC data of Abell 1689 were observed with the HST proposal : H. Ford and N. Benitez (Johns Hopkins University), and T. Broadhurst (Tel Aviv University). The science team for this release includes: E. Jullo (Jet Propulsion Laboratory), P. Natarajan (Yale University), J.-P. Kneib (Laboratoire d'Astrophysique de Marseille, CNRS, France), A. D'Aloisio (Yale University), M. Limousin (Laboratoire d'Astrophysique de Marseille and University of Copenhagen, Denmark), J. Richard (Durham University, U.K.), and C. Schimd (Laboratoire d'Astrophysique de Marseille, CNRS, France).
Instrument June 12-21, 2002 Exposure Time: 10.5 hours
Exposure Dates June 12-21, 2002, Exposure Time: 10.5 hours
Filters F475W (g) F775W (i) F850LP (z)
About The Image
Color Info This image is a composite of separate exposures acquired by the ACS instrument on the Hubble Space Telescope (HST). Several filters were used to sample broad 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: Dark Matter Map + F475W (g) Green: F775W (i) Red: F850LP (z)
Compass Image Compass and Scale Image of Galaxy cluster Abell 1689
About The Object
Object Name A name or catalog number that astronomers use to identify an astronomical object.
Object Description The type of astronomical object.
R.A. Position Right ascension – analogous to longitude – is one component of an object's position.
Dec. Position Declination – analogous to latitude – is one component of an object's position.
Constellation One of 88 recognized regions of the celestial sphere in which the object appears.
Distance The 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.
Dimensions The physical size of the object or the apparent angle it subtends on the sky.
About The Data
Data Description
  • Proposal: 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.
Instrument The science instrument used to produce the data.
Exposure Dates The date(s) that the telescope made its observations and the total exposure time.
Filters The camera filters that were used in the science observations.
About The Image
Image Credit The primary individuals and institutions responsible for the content.
Publication Date The date and time the release content became public.
Color Info A brief description of the methods used to convert telescope data into the color image being presented.
Orientation The rotation of the image on the sky with respect to the north pole of the celestial sphere.

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