[Utah-astronomy] Improved Stardust composite now in Gallery

I fixed up the composite image of the Stardust flyby and have now included it in the SLAS Gallery, you can find it here: http://www.slas.us/gallery2/main.php?g2_itemId=167 When I edited the first time my LCD hadn't warmed up long enough so greys looked black and I missed that grey streak along the spacecrafts track. So I've re-done it with hopefully cleaner results. Howard