Omega Centauri - WFC3

Omega Centauri - WFC3

Credits

NASA, ESA, and J. Anderson and R. van der Marel (STScI)

About The Object
Object Name Omega Centauri, NGC 5139, Omega Cen
Object Description Globular Star Cluster
R.A. Position 13h 26m 47.2s
Dec. Position -47° 28' 46.44"
Constellation Centaurus
Distance 16,000 light-years or 4,800 parsecs
About The Data
Data Description The Hubble image was created from data from the calibration proposal : E. Sabbi, J. Kim Quijano, and L. Dressel (STScI). The proper motions of stars in the cluster were obtained from the following ACS proposals: A. Cool (San Francisco State Univ.), J. Anderson (STScI), C. Bailyn (Yale Univ.), J. Carlin (San Francisco Univ.), P. Edmonds (Eureka Scientific), J. Grindlay (Harvard Univ.), and D. Haggard (Univ. of Washington); : J. Anderson (STScI) and I. King (Univ. of Washington); and : A. Sarajedini (Univ. of Florida), J. Anderson (STScI), A. Aparicio (Inst. de Astrofisica de Canarias), L. Bedin (STScI), B. Chaboyer (Dartmouth College), I. King (Univ. of Washington), S. Majewski (Univ. of Virginia), G. Piotto (Univ. of Padua), N. Reid (STScI), A. Rosenberg (Inst. de Astrofisica de Canarias), and M. Siegel (Univ. of Texas, Austin)
Instrument HST>ACS/WFC and HST>WFC3/UVIS
Exposure Dates ACS: June 27-30, 2002, December 11, 2004, and June 22, 2006 WFC3/UVIS: July 15, 2009, Exposure Time: 2.7 hours
Filters F225W (U), F275W (U), F336W (U), F438W (B), F606W (V), and F814W (I)
About The Image
Color Info The image is a composite of separate exposures made by the WFC3 instrument on the Hubble Space Telescope. Three filters were used 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: F225W (U) Green: F336W (U) Red: F814W (I)
Compass Image Omega Centauri - WFC3
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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