I LOVE astrolabes and wish I had one, as this speaker wishes. When he told me it would in all likelihood cost more than my entire neighborhood, my hopes were dashed. Well, truthfully, I had no hopes to dash, but nevertheless, a wild part of me wants to build one of these (the wild part does not care one whit that I have none of the skills required to build such an instrument). My heart soars as I contemplate an astrolabe, even one that is simply a pixel image on a screen. Oh, and yes, I wish there were an iPhone app astrolabe, but I searched and there is none (so far). Something to wish for!