A bit late, but I noticed this clip: https://youtu.be/_5jwmSbjfMk?t=1m3s that confirms what 359 noted earlier, that the orange bombardment on Harlak doesn't match with the standard blue torpedoes which are also used by the Charon.
Also, while I think the ISS altitude comparison is a reasonable comparison, it is true that real life video/images taken from orbit often use wide angle lenses that can distort and increase the observed curvature, so that the view seen in the episode could be further away and the continents indeed larger than the overlay I first made over Florida. Again, the difference probably wouldn't be huge, but a comment in another thread about the curvature pissing off Flat Earthers reminded me and I thought I should address it for the sake of completeness and accuracy.