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Compass and Scale Image of NGC 6217
About the Object
- R.A. PositionR.A. PositionRight ascension – analogous to longitude – is one component of an object's position.16h 32m 39.19s
- Dec. PositionDec. PositionDeclination – analogous to latitude – is one component of an object's position.78° 11' 53.0"
- ConstellationConstellationOne of 88 recognized regions of the celestial sphere in which the object appears.Ursa Minor
- 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.60 million light-years or 21 million parsecs
- DimensionsDimensionsThe physical size of the object or the apparent angle it subtends on the sky.This image is 2.2 arcminutes (44,000 light-years or 13,400 parsecs) wide.
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 Hubble images were created from data from the calibration proposal 11371: M. Sirianni (STScI/ESA), M. Chiaberge (STScI/ESA/INAF), A. Suchkov (Johns Hopkins University), and N. Grogin (STScI). Acknowledgments for NGC 6217 Observers: M. Sirianni (STScI/ESA), M. Chiaberge (STScI/ESA/INAF), A. Suchkov (Johns Hopkins University), and N. Grogin (STScI) Data Analysis: M. Mutchler (STScI) Image Composition: Z. Levay and L. Frattare (STScI) Text: D. Weaver and R. Villard (STScI) Illustrations: Z. Levay (STScI) Video: G. Bacon (STScI) Science Consultant: K. Noll (STScI) - InstrumentInstrumentThe science instrument used to produce the data.HST>ACS/WFC
- Exposure DatesExposure DatesThe date(s) that the telescope made its observations and the total exposure time.June-July 2009, Exposure Time: 3.0 hours
- FiltersFiltersThe camera filters that were used in the science observations.F435W (g), F625W (r), F658N (H-alpha + [N II]), and F814W (I)
- Object NameObject NameA name or catalog number that astronomers use to identify an astronomical object.NGC 6217
- Object DescriptionObject DescriptionThe type of astronomical object.Barred Spiral Galaxy
- Release DateSeptember 9, 2009
- Science ReleaseHubble Opens New Eyes on the Universe
- Credits
The image is a composite of separate exposures made by the ACS instrument on the Hubble Space Telescope. Four filters were used to sample broad and narrow wavelength ranges. The color results from assigning different hues (colors) to each monochromatic image. In this case, the assigned colors are: Red: F814W (I) + F658N (H-alpha + [N II]) Green: F625W (r) Blue: F435W (g)
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Claire Andreoli
NASA’s Goddard Space Flight Center
Greenbelt, MD
claire.andreoli@nasa.gov
