Compass and Scale Image of M106
M106, NGC 4258
23.5 million light-years (7,000,000 parsecs)
Note: Ground-based image data provided by R. Gendler and J. GaBany was used to fill in or supplement areas where HST data did not exist or was limited.
The image was created from Hubble data from proposal 11570: A. Riess (STScI) and collaborators. Other ACS and WFPC2 datasets from various other proposals were used to augment this proposal's data.
ACS/WFC: F435W (G), F555W (V), F606W (V), and F814W (I)
WFPC2: F656N (H-alpha)
WFC3/UVIS: F555W (V) and F814W (I)
ACS/WFC: F814W (I)
Ground-based: 656nm (H-alpha)
This image is a composite of separate exposures acquired by various Hubble instruments and ground-based telescopes. Several filters were used to sample various wavelengths/frequencies. 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:
Blue: ACS/WFC F435W (G)
Green: WFC3/UVIS F555W (V) + ACS/WFC F555W (V) + ACS/WFC F606W (V)
Red: Ground-based 656nm (H-alpha) + WFPC2 F656N (H-alpha) + ACS/WFC F814W (I) + WFC3/UVIS F814W (I)
Luminosity: ACS/WFC F814W (I)