Compass and Scale Images for NGC 1569
11 million light-years (3.4 megaparsecs)
This image is roughly 2.7 arcminutes (8,700 light-years or 2,700 parsecs) wide.
This image was created from HST data from proposals:
8133: P. Shopbell (Caltech), R. Dufour (Rice University), D. Walter (South Carolina State University), and A. Wilson (University of Maryland)
10885: A. Aloisi (STScI/ESA) et al. The science team includes: A. Aloisi (STScI/ESA), L. Angeretti (Astronomical Observatory of Bologna/INAF), F. Annibali and L. Greggio (Astronomical Observatory of Padua/INAF), A. Grocholski (STScI), E. Held (Astronomical Observatory of Padua/INAF), J. Mack (STScI), D. Romano (Astronomical Observatory of Bologna/INAF), M. Sirianni (STScI/ESA), M. Tosi (Astronomical Observatory of Bologna/INAF), and R. van der Marel (STScI).
ACS: F658N (H-alpha + [N II]) and F606W (wide V)
WFPC2: F502N ([O III]), F487 (H-beta)
The image is a composite of separate exposures made by the ACS and WFPC2 instruments on the Hubble Space Telescope. Three filters were used to sample narrow-wavelength ranges. One filter was used to sample broad wavelengths. The color results from assigning different hues (colors) to each monochromatic image. In this case, the assigned colors are:
Red: F658N (H-alpha + [N II])
Green/cyan: F606W (wide V)
Cyan: F502N ([O III])
Blue: F487 (H-beta)