Can anyone tell me some high-resolution imagery very?

They must be printed on a banner more than 300 dpi and the banner is approximately 30 "x 70" or better resolution is 9000 x 21000. The best I could find 3800×3800 is about the Hubble etc. Are there available where they have stitched together several images of the Hubble? Kind of thing that interests us is the head Horse Nebula etc. Something interesting as background for our banner roll-ups.

Try these: http://www.noaa.gov/satellites.html www.eso.org/outreach/ www.hubblesite.org/ www.sciencedirect.com/ www.esa.int / esaCP / index.html www.csiro. / AU www.antwrp.gsfc.nasa.gov.apod / lib / aptree.html

RollUp Banner Printing-Nehal