.gif image thumbs from NED are broken

[jonroberts]

So this is a different issue than the one before. Some image thumbnails from NED are broken. For example: 4U 1630-47 up and right from the middle of the galaxy.

The thumbnail is: http://ned.ipac.caltech.edu/dss/4U_1630-47.gif

This is a broken link until we visit the NED info page, at which point it is generated. From that point on the image works. It must be a temp image generated by NED on demand.

Ideally we need to store the NED .gif thumbs locally and set the image_url to the local store.

[jhn]

I'm actually getting a few 404s on the console plus the images end up linking to the home path. eg.:
LBQS 2209-1842,
GRB100316D

Others redirect back to the root path without throwing any 404. eg.:
Abell 3266,
MCG-05-18-002,
NGC 5204,
SDSSJ082628.17+152308.1,
3C454.3

[jonroberts]

I've reverted the image reference to the original one - built by javascript. I'll need to pick Ross's brains about why the url wasn't being populated by reference_url properly.

I've also provided a default image for the case where the image url is broken.