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Compass Image for Hubble Frontier Field Abell 370
About the Object
- R.A. PositionR.A. PositionRight ascension – analogous to longitude – is one component of an object's position.02:39:50.5
- Dec. PositionDec. PositionDeclination – analogous to latitude – is one component of an object's position.−01:35:08
- ConstellationConstellationOne of 88 recognized regions of the celestial sphere in which the object appears.Cetus
- 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.4 billion light-years (to Abell 370)
- DimensionsDimensionsThe physical size of the object or the apparent angle it subtends on the sky.Image is 2 arcmin across (about 2.33 million light-years at distance of Abell 370)
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.Abell 370 is part of the Frontier Fields Program. These data are from the HST proposals 11108 (PI: E. Hu, University of Hawaii), 11507 (PI: K. Noll, GSFC), 11591 (PI: J.-P. Kneib, Laboratoire d'Astrophysique de Marseille), 13459 (PI: T. Treu, UCLA), 13790 (PI: S. Rodney, JHU), 14038 (PI: J. Lotz, STScI), and 14216 (R. Kirshner, Harvard University). For more information, see http://www.stsci.edu/hst/campaigns/frontier-fields. - InstrumentInstrumentThe science instrument used to produce the data.HST ACS/WFC; WFC3/IR
- Exposure DatesExposure DatesThe date(s) that the telescope made its observations and the total exposure time.September 2009 - February 2015
- FiltersFiltersThe camera filters that were used in the science observations.ACS/WFC: F435W, F606W, and F814W; WFC3/IR: F105W, F125W, F140W, and F160W
- Object NameObject NameA name or catalog number that astronomers use to identify an astronomical object.Abell 370
- Object DescriptionObject DescriptionThe type of astronomical object.Asteroids in Foreground of Hubble Frontier Fields Image of Abell 370
- Release DateNovember 2, 2017
- Science ReleaseHubble Sees Nearby Asteroids Photobombing Distant Galaxies
- CreditNASA, ESA, Ben Sunnquist (STScI), Jennifer Mack (STScI)
This image is a composite of separate exposures made by the WFC3 instrument on the Hubble Space Telescope using two different cameras and filters isolating the light of specific elements or of specific broad wavelength ranges. The color arises by assigning different hues (colors), to each monochromatic image. In this case, the colors are: blue WFC3/UVIS F435W + F606W, green WFC3/UVIS F814W + WFC3/IR F015W, orange/red WFC3/IR F125W + F140W + F160W.
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Claire Andreoli
NASA’s Goddard Space Flight Center
Greenbelt, Maryland
claire.andreoli@nasa.gov
