Compass and Scale Image of NGC 6503
NGC 6503
18 million light-years (5.5 megaparsecs)
F658N (H-alpha+[N II]), F275W (UV), F336W (U), F438W (B), F555W (V), and F814W (I)
This image is a composite of separate exposures acquired by the ACS/WFC and WFC3/UVIS instruments. Several filters were used to sample various wavelengths. 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:
Pink: F275W (UV)
Purple: F336W (U)
Blue: F438W (B)
Green: F555W (V)
Red: F814W (I)
Red: F658N (H-alpha+[N II])
NASA, ESA, and Z. Levay (STScI);
Acknowledgment: D. Calzetti (University of Massachusetts, Amherst), H. Ford (JHU), and the Hubble Heritage (STScI/AURA)-ESA/Hubble Collaboration