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XDF Compass and Scale Image
About the Object
- R.A. PositionR.A. PositionRight ascension – analogous to longitude – is one component of an object's position.03h 32m 38.5s
- Dec. PositionDec. PositionDeclination – analogous to latitude – is one component of an object's position.-27° 47' 0.0"
- ConstellationConstellationOne of 88 recognized regions of the celestial sphere in which the object appears.Fornax
- 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.The image is 2.3 arcminutes by 2 arcminutes in size.
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.The image was created from Hubble data from the following proposals: 9352, 10189, 10340, and 12099: A. Riess (STScI/JHU); 9425: M. Giavalsco (University of Massachusetts); 9488: K. Ratnatunga (Carnegie Mellon University); 9575: W. Sparks (STScI); 9793 and 10530: S. Malhotra (Arizona State University); 9978 and 10086: S. Beckwith (STScI); 10258: C. Kretchmer (JHU); 11359: R. O'Connell (University of Virginia); 11563: G. Illingworth (University of California, Santa Cruz); 12060 - 12062: S. Faber (University of California, Santa Cruz); 12177: P. van Dokkum (Yale University). The XDF/HUDF09 team members include: G. Illingworth (University of California, Santa Cruz), R. Bouwens (Leiden University), M. Carollo (Swiss Federal Institute of Technology, Zurich (ETH)), M. Franx (Leiden University), V. Gonzalez (University of California, Santa Cruz), I. Labbe (Leiden University), D. Magee and P. Oesch (University of California, Santa Cruz), M. Stiavelli (STScI), M. Trenti (University of Cambridge), and P. van Dokkum (Yale University). - InstrumentInstrumentThe science instrument used to produce the data.HST>ACS/WFC and HST>WFC3/IR
- Exposure DatesExposure DatesThe date(s) that the telescope made its observations and the total exposure time.July 2002 to March 2012, Exposure Time: 22.5 days (2 million seconds)
- FiltersFiltersThe camera filters that were used in the science observations.ACS/WFC: F435W (B), F606W (V), F775W (I), F814W (I), and F850LP (z) WFC3/IR: F105W (Y), F125W (J), and F160W (H)
- Object NameObject NameA name or catalog number that astronomers use to identify an astronomical object.Hubble eXtreme Deep Field, XDF
- Object DescriptionObject DescriptionThe type of astronomical object.Optical and Infrared Survey
- Release DateSeptember 25, 2012
- Science ReleaseHubble Goes to the eXtreme to Assemble Farthest Ever View of the Universe
- Credit
This image is a composite of separate exposures acquired by the ACS and WFC3/IR instruments. Several filters were used to sample various wavelengths. The color results from assigning different hues (colors) to each monochromatic (grayscale) image from the eight different filters used by the two instruments grouped as follows: Blue: ACS/WFC F435W (B) + F606W (V) Green: ACS/WFC F775W (I) + F814W (I) + F850LP (z) Red: WFC3/IR F105W (Y) + F125W (J) + F160W (H)
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Claire Andreoli
NASA’s Goddard Space Flight Center
Greenbelt, Maryland
claire.andreoli@nasa.gov
