WhoCares and Zamzow, you both forgot to take into account the rotation of our solar system near the outer limits of one arm of our galaxy, not to mention the likely motion of the galaxy itself trough space (although the last one might be difficult to calculate).

As for the image, to me it's interesting in an "old photograph of unnamed people doing mundane daily tasks which haven't changed significantly since the photo was taken in the 1870's" kind of way. How much government money (from any and all governments involved) was spent to get it and how much will it and any knowledge gained from it directly benefit desperate people?