On the other hand, the website of Priscilla Frisch (http://astro.uchicago.edu/~frisch/visualization.html) suggests that this APOD image is based on some slightly earlier and less complete data from the same instrument (Hubble GHRS). The methodology is outlined in Frisch (1994), Science, v265, p1423, "Morphology and Ionization of the Interstellar Cloud Surrounding the Solar System":
http://www.sciencemag.org/cgi/reprin...423.pdf?ck=nck

Using the results from the 1995 paper I mentioned above would be better.