Easy-Toggle A Reference Object For... Reference?

[BlindedByTheLight]

Hey there... so as I fly over Io or the Moon or any cool object with visible surface features, I have been thinking to myself... "just how big is that frickin hole down there?"

What would really be cool is if there was an easy-to-toggle object that I could make appear attached to any particular surface feature I'm looking at. What I COULD do now, of course, is just make an add-on model of the Sears Tower and place it over, say, Mons Pubis (is there such a place?) on Mars. Then, as I fly over the Mons, I can truly get a sense of scale.

The toggling part would be easy (I could just work the add-on so the model only appears in, say, hires). But how to get it to appear dynamically over whatever surface I'm looking at now?

What would REALLY be cool was if this feature was implemented at a lower level whereby I could just hit, say, ctrl-r for "reference" and Celestia would place a giant object we're all familiar with under the marker. Maybe I could cycle through a few objects... the Sears Tower, the Grand Canyon, Kirstie Alley... just to get a sense of how big these features REALLY are.

Whaddya think?

[TERRIER]

Hello Steven,

Check out this previous post on the forum;
http://www.celestiaproject.net/forum/viewtopic.php?t=4587

It's not exactly what you're after, but it isn't a bad way to get an idea of relative sizes within our solar system.