What is the difference between a preview and a cutout (when using the advanced search option)?
A preview image (i.e., what you are looking at by default when you select the “Image” tab) shows the entire field of view, binned down and turned into a JPEG image to make it available very quickly. The only control you have over these previews is that you can select a larger size (512 pixels instead of 256 pixels) in the advanced search options. On the other hand, a cutout image is a view of a small portion of an image centered at the RA/Dec position specified in the search. A cutout may be either a JPEG image (viewable in the browser) or a regular FITS file containing the true pixel values. You can switch between Previews and Cutouts using the advanced search controls. If you select cutouts, an additional option to set the size of the region is available (the default size is 12.8 arcsec, corresponding to 256×256 WFC pixels.) If there are multiple images available (for example, using different filters), then there will be a cutout shown for each in the “Image” view. Note that since th
