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News Release Archive:

News Release 242 of 938

September 16, 2008 09:00 AM (EDT)

News Release Number: STScI-2008-33

Galaxy Silhouettes

Technical facts about this news release:

About the Object
Object Name: 2MASX J00482185-2507365
Object Description: Overlapping Galaxies
Position (J2000): R.A. 00h 48m 19s.59
Dec. -25° 08' 51".2
Constellation: Sculptor
Distance: 780 million light-years (240 megaparsecs)
Dimensions: This image is roughly 50 arcseconds (180,000 light-years or 56 kiloparsecs) wide.
About the Data
Science Team: This image was created from HST data from proposal 10915: J. Dalcanton (University of Washington) et al. The science team comprises B. Holwerda and R. de Jong (Space Telescope Science Institute), W. Keel (University of Alabama, Tuscaloosa), and J. Dalcanton and B. Williams (University of Washington).
Instrument: ACS
Filters: F475W (B), F606W (V), and F814W (I)
Exposure Date(s): September 19, 2006
Exposure Time: 1.9 hours
About the Release
Image Credit: NASA, ESA, and The Hubble Heritage Team (STScI/AURA)
Release Date: September 16, 2008
Color The image is a composite of separate exposures made by the ACS instrument on the Hubble Space Telescope. Three filters were used to sample broad wavelength ranges. The color results from assigning different hues (colors) to each monochromatic image. In this case, the assigned colors are:
F475W (B) blue
F606W (V) green
F814W (I) red
Orientation: Compass and Scale Image for Overlapping Galaxies 2MASX J00482185-2507365