Close-Up of Light Echo Around V838 Monocerotis (September 2006)
V838 Monocerotis, V838 Mon
The star is ~20,000 light-years (~6 kiloparsecs) away.
This image was created from HST data from the following proposals: 10618 and 10913: H. Bond (STScI), R. Wagner (University of Arizona), R. White (STScI), R. Corradi (Observatorio del Roque de los Muchachos), L. Crause (University of Cape Town), M. Dopita (Australian National University), A. Henden (United States Naval Observatory), Z. Levay (STScI), U. Munari (Universita di Padova), N. Panagia (STScI/ESA), W. Sparks (STScI), S. Starrfield (Arizona State University), and B. Sugerman (STScI).
F606W (V) and F814W (I)
This image is a composite of many separate exposures made by the ACS instrument on the Hubble Space Telescope. Two 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:
Blue: F606W (V)
Greed: F606W (V) + F814W (I)
Red: F814W (I)