The distance to M31 is 2.5 million light-years (0.8 megaparsecs).
Dimensions:
The individual images surrounding the variable star are 5 arcseconds (62.5 light-years or 19.2 parsecs) wide.
About
the Data
Note:
The Hubble Space Telescope observations of Hubble's Variable M31-V1 were made possible from ground-based data provided by the American Association of Variable Star Observers (AAVSO).
Data Description:
The image was created from Hubble data from proposal 12326: K. Noll (PI), Z. Levay, M. Mutchler, T. Borders, L. Frattare, M. Livio, C. Christian, H. Bond, and D. Soderblom (Hubble Heritage Team/STScI).
Instrument:
WFC3/UVIS
Filters:
F475X (Wide Blue) and F600LP (Long Pass)
Exposure
Date:
December 2010 - January 2011
Exposure
Time:
1.7 hours
About
this Image
Credit:
NASA, ESA, and the Hubble Heritage Team (STScI/AURA)
Release
Date:
May 20, 2011
Color:
This image is a composite of separate exposures acquired by the WFC3 instrument on HST. Several filters were used to sample broad and narrow wavelength ranges. 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:
