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File:NGC7293 (2004).jpg


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English: The Helix Nebula: a Gaseous Envelope Expelled By a Dying Star
About the Object
  • Object Name: Helix Nebula, NGC 7293 or "The Eye of God"
  • Object Description: Planetary Nebula
  • Position (J2000): R.A. 22h 29m 48.20s
Dec. -20° 49' 26.0"
  • Constellation: Aquarius
  • Distance: About 690 light-years (213 parsecs)
  • Dimensions: The image is roughly 28.7 arcminutes (5.6 light-years or 1.7 parsecs) across.
About the Data
  • Instruments: ACS/WFC on Hubble Space Telescope (HST) and Mosaic II Camera on CTIO 4m telescope
  • Exposure Time: 4.5 hours (HST) and 10 minutes (CTIO)
  • Filters: F502N ([O III]) and F658N (Ha) (for the HST); c6009 (H alpha)and kc6014 ([O III]) for the CTIO
Image properties
  • Centered on white dwarfed and cropped
  • Downsampled to 3200x3200
  • Saved as jpg, quality 8/10, 5 scans
  • Stitching errors manually fixed
Français : La Nébuleuse de l'hélice: Une enveloppe gazeuse éjectée par une étoile moribonde.
  • Nom: Nébuleuse de l'hélice, NGC 7293
  • Description: Nébuleuse planétaire
  • Position (J2000): R.A. 22h 29m 48,20s
Dec. -20° 49' 26,0"
  • Constellation: Poissons
  • Distance: 690 années lumières (213 parsecs) environ.
  • Dimensions: L'image fait 28.7 minutes d'arc de largeur, soit environ 5,6 années lumière (1,7 parsec).
Acquisition des données
  • Instruments: ACS/WFC sur le Télescope Spatial Hubble (HST), Caméra Mosaic II sur le télescope de 4m du CTIO.
  • Exposition: 4h 30 (HST) 10 minutes (CTIO)
  • Filtres: HST: F502N ([O III]), F658N (Ha); CTIO: c6009 (H alpha), kc6014 ([O III]).
  • Centré sur la naine blanche et recoupé
  • Réduite à 3200x3200 px
  • Compressée jpg, qualité 8/10, 5 scans
  • bordures ajustées manuellement
Español: La nebulosa de la hélice: Un sobre gaseoso expedido por una estrella muerta
Acerca del objeto
  • Nombre del objeto: Nebulosa de la hélice, NGC 7293 o "El ojo de Dios"
  • Descripción del objeto: Nebulosa planetaria
  • Pasición (J2000): R.A. 22h 29m 48.20s
Dec. -20° 49' 26.0"
  • Constelación: Acuario
  • Distancia: Cerca de 690 años luz(213 parsecs)
  • Dimensiones: La imagen es de cerca de 28.7 minutos de largo de arco (5.6 años luz o 1.7 parsecs).
Acerca de los datos
  • Instrumentos: ACS/WFC en el Telescopio Espacial Hubble (HST por sus siglas en inglés), Cámara Mosaic II en el telescopio de 4m de CTIO
  • Tiempo de exposición: 4.5 horas (HST) ,10 minutos (CTIO)
  • Filtros : F502N ([O III]) y F658N (Ha) (para el HST); c6009 (H alfa)y kc6014 ([O III]) para el CTIO
Propiedades de la imagen
  • Centrada en la enana blanca
  • Reducida ato 3200x3200
  • Guardado como jpg, calidad 8/10, 5 scans
  • Errores de borde corregidos manualmente
Date Exposure: HST: november 19, 2002, CTIO: September 17/18, 2003.
Release:December 16, 2004.
Source Image, complementary information
Author The HST data are from proposal 9700. Processed images may be obtained from the Helix MAST web site. The Hubble Helix Team includes M. Meixner, H.E. Bond, G. Chapman (STScI), Y.-H. Chu (U. Illinois, Urbana-Champaign), P. Cox (Institut d'Astrophysique Spatiale, France), W. Crothers, L.M. Frattare, R.Gilliland (STScI), M. Guerrero R. Gruendl (U. Illinois, Urbana-Champaign), F. Hamilton, (STScI), R.Hook (STScI/ESO), P. Huggins (New York Univ.), I. Jordan, C.D. Keyes, A. Koekemoer (STScI), K.Kwitter (Williams College), Z.G. Levay, P.R. McCullough, M. Mutchler, K. Noll (STScI), C.R. O'Dell (Vanderbilt University), N. Panagia, M. Reinhart, M. Robberto, K. Sahu, D. Soderblom, L. Stanghellini, C. Tyler, J. Valenti, A. Welty, R. Williams (STScI). The CTIO data were taken by C.R. O'Dell (Vanderbilt University) and L.M. Frattare (STScI). The science team includes C.R. O'Dell (Vanderbilt University), P.R. McCullough and M. Meixner (STScI).

Credit: NASA, ESA, and C.R. O'Dell (Vanderbilt University)

News Release Number: STScI-2004-32


Public domain This file is in the public domain because it was created by NASA and ESA. NASA Hubble material (and ESA Hubble material prior to 2009) is copyright-free and may be freely used as in the public domain without fee, on the condition that only NASA, STScI, and/or ESA is credited as the source of the material. This license does not apply if ESA material created after 2008 or source material from other organizations is in use.
The material was created for NASA by Space Telescope Science Institute under Contract NAS5-26555, or for ESA by the Hubble European Space Agency Information Centre. Copyright statement at or 2008 copyright statement at
For material created by the European Space Agency on the site since 2009, use the {{ ESA-Hubble}} tag.
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Picture of the day

This image was selected as picture of the day on Wikimedia Commons for 19 May 2007. It was captioned as follows:

English: Helix Nebula, NGC 7293

The following pages on Schools Wikipedia link to this image (list may be incomplete):

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