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Compass and Scale Image for NGC 2841

Image titled “NGC 2841, HST WFC3/UVIS” with compass arrows, scale bar, and color key.

About the Object

  • R.A. Position
    R.A. PositionRight ascension – analogous to longitude – is one component of an object's position.
    09h 22m 2.64s
  • Dec. Position
    Dec. PositionDeclination – analogous to latitude – is one component of an object's position.
    50° 58' 35.46"
  • Constellation
    ConstellationOne of 88 recognized regions of the celestial sphere in which the object appears.
    Ursa Major
  • Distance
    DistanceThe 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.
    About 46 million light-years (14 million parsecs)
  • Dimensions
    DimensionsThe physical size of the object or the apparent angle it subtends on the sky.
    The image is 2.6 arcminutes (34,000 light-years or 10,500 parsecs) wide.

About the Data

  • Data Description
    Data 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 proposal 11360: R. O'Connell (University of Virginia), B. Balick (University of Washington), H. Bond (STScI), D. Calzetti (University of Massachusetts), M. Carollo (Swiss Federal Institute of Technology, Zurich), M. Disney (University of Wales, College of Cardiff), M. Dopita (Australian National University), J. Frogel (Ohio State University Research Foundation), D. Hall (University of Hawaii), J. Holtzman (New Mexico State University), P. McCarthy (Carnegie Institution of Washington), F. Paresce (European Southern Observatory, Germany), A. Saha (NOAO/AURA), J. Silk (University of Oxford), A. Walker (NOAO/CTIO), B. Whitmore (STScI), R. Windhorst (Arizona State University), and E. Young (University of Arizona).
  • Instrument
    InstrumentThe science instrument used to produce the data.
    HST>WFC3/UVIS
  • Exposure Dates
    Exposure DatesThe date(s) that the telescope made its observations and the total exposure time.
    January 5-7, 2010, Exposure Time: 2 hours
  • Filters
    FiltersThe camera filters that were used in the science observations.
    F336W (U), F547M (y), F657N (H-alpha + [N II]), and F814W (I)
  • Object Name
    Object NameA name or catalog number that astronomers use to identify an astronomical object.
    NGC 2841
  • Object Description
    Object DescriptionThe type of astronomical object.
    Flocculent Spiral Galaxy
  • Release Date
    February 17, 2011
  • Science Release
    Hubble Shows New Image of Spiral Galaxy NGC 2841
    Read the release
  • Credit
    Illustration: NASA, ESA, and Z. Levay (Hubble Heritage Team/STScI); Science: M. Crockett and S. Kaviraj (Oxford University, UK), R. O'Connell (University of Virginia), B. Whitmore (STScI), and the WFC3 Scientific Oversight Committee

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Image titled “NGC 2841, HST WFC3/UVIS” with compass arrows, scale bar, and color key.
Color Info
Color InfoA brief description of the methods used to convert telescope data into the color image being presented.

This image is a composite of separate exposures acquired by the WFC3 instrument on HST. Several filters were used to sample broad and narrow 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: F336W (U) Green: F547M (y) Red/orange: F657N (H-alpha + [N II]) Red: F814W (I)

Compass and Scale
Compass and ScaleAn astronomical image with a scale that shows how large an object is on the sky, a compass that shows how the object is oriented on the sky, and the filters with which the image was made.

Related Images & Videos

A spiral galaxy with a mixture of red and blue stars threaded throughout many lanes of dark brown dust.

Spiral Galaxy NGC 2841

NASA's Hubble Space Telescope reveals a majestic disk of stars and dust lanes in this view of the spiral galaxy NGC 2841. A bright cusp of starlight marks the galaxy's center. Spiraling outward are dust lanes that are silhouetted against the population of whitish middle-aged...

Spiral Galaxy NGC 2841 Zoom

Spiral Galaxy NGC 2841 Zoom

This video is a zoom into the majestic disk of stars and dust lanes in the NASA Hubble Space Telescope view of the spiral galaxy NGC 2841, which lies 46 million light-years away in the constellation of Ursa Major (The Great Bear).

Spiral Galaxy NGC 2841 – Pan

Spiral Galaxy NGC 2841 – Pan

This video is a pan across the majestic disk of stars and dust lanes in the NASA Hubble Space Telescope view of the spiral galaxy NGC 2841, which lies 46 million light-years away in the constellation of Ursa Major (The Great Bear).

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Details

Last Updated
Mar 28, 2025
Contact
Media

Claire Andreoli
NASA’s Goddard Space Flight Center
Greenbelt, Maryland
claire.andreoli@nasa.gov

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