News Release Archive:

News Release 50 of 168

February 13, 2007 11:00 AM (EST)

News Release Number: STScI-2007-09

The Colorful Demise of a Sun-like Star

Technical facts about this news release:

About the Object
Object Name: NGC 2440
Object Description: Planetary Nebula in the Milky Way Galaxy
Position (J2000): R.A. 07h 41m 55.3s
Dec. -18° 12' 31"
Constellation: Puppis
Distance: Approximately 3,600 light-years (1,100 parsecs)
Dimensions: This image is roughy 1.2 arcminutes (1.3 light-years or 0.4 parsecs) wide.
About the Data
Data Description: The Hubble image was created from HST data from proposal 11090: K. Noll, H. Bond, C. Christian, L. Frattare, F. Hamilton, Z. Levay, M. Mutchler, and W. Januszewski (Hubble Heritage Team/STScI).
Instrument: WFPC2
Exposure Date(s): February 6, 2007
Filters: Narrow: F469N (He II), F502N ([O III]), F656N (H-alpha), F658N ([N II])
Broad: F439W (B), F555W (V), F675W (R)
About the Image
Image Credit: NASA, ESA, and K. Noll (STScI)
Release Date: February 13, 2007
Color: This image is a composite of many separate exposures made by the WFPC2 instrument on the Hubble Space Telescope using several different filters. Three filters were used to sample broad wavelength ranges. Four filters were used to sample narrow wavelength emission. The color results from assigning different hues (colors) to each monochromatic image. In this case, the assigned colors are:
F439W (B), F469N (He II), F502N ([O III]) blue
F555W (V), F656N (H-alpha) green
F658N ([N II]), F675W (R) red
Orientation/Scale: The Colorful Demise of a Sun-like Star