For general information on these images, please refer to the following
paper:

    MIPS 24-160 micron photometry for the Herschel-SPIRE Local
        Galaxies Guaranteed Time Programs
    G. J. Bendo, F. Galliano, S. C. Madden
    MNRAS, 2012, in press

The preprint of the paper is accessible in preprint form from the
arXiv.org e-Print archive at

    http://arxiv.org/abs/1202.4629

The ADS Abstract Service entry for this paper can currently be
accessed from

    http://adsabs.harvard.edu/abs/2012arXiv1202.4629B



All images have the following characteristics:

 * Two files are provided for each galaxy at each wavelength (when data for 
   that wavelength are available):
    * An image map (ending in img.fits) giving the image data
    * An error map (ending in err.fits) with the uncertainty in each pixel
        as determined by the mapmaking software.

 * Images are calirbated in MJy/sr.

 * Pixel sizes are set to the following:
    * 24 micron: 1.5 arcsec
    * 70 micron: 4.5 arcsec
    * 160 micron: 9.0 arcsec

 * Images are generally oriented with north up and east to the left.

 * Images made from scan map data and some maps made from photometry
   map data of multiple fields are cropped to include an area
   equivalent to 2 times the optical disc size given by the Third
   Reference Catalogue by de Vaucouleurs et al.  Images covering
   smaller areas are left upcropped.

 * Images are background-subtracted, with estimated background signal and
   noise levels given in the fits headers for each image.

 * Some 160 micron images were created with data taken in the fast
    scan mode, and so the observed regions may contain large gaps. 



Specific notes on individual galaxy images are given below:

NGC 4356 - The galaxy falls near an artefact in the 24 micron image
    also seen in the image for NGC 4472 (see below), but the feature
    appears relatively faint and broad in the viscinity of NGC 4356.

NGC 4472 - The 24 micron image in the scan map data were affected by
    two streak-like regions that run roughly perpendicular to the scan
    map direction.  One of these streak-like regions runs across the
    optical disc of NGC 4472.

NGC 4486 - The 160 micron data within the optical disc were notably
    affected by residual striping.

NGC 4567/4568 - The 70 micron data were heavily affected by latent
    image effects.

NGC 4666 - This galaxy was observed in photometry map node. 
    The galaxy is observed in such a way that the latent image removal in the 
    24 micron data processing leaves a couple of NaN values near the center 
    of the galaxy.
