SkyView will by default provide an image at the full resolution of the survey you select. If you prefer you can specify the total size of the image (which in conjunction with the number of pixels gives you the resolution). So, for example, if you want to see the entire constellation of Orion, the DSS surveys are a poor choice. Say we want a field of view of 40 x 40 degrees, for our constellation map. The DSS pixels are about 1″ or so in size, so we would need a image with something like 100,000 x 100,000 pixels to cover the image at full resolution. You can in principle do this, but it is much better to use a survey closer to the native resolution, e.g., the Mellinger optical data. Here the default pixel size is about 0.01 degree so we only need to undersample by a little to get say a 1000 x 1000 image covering our region of interest.