Celestia Forums

Can someone tell me why i have nebula selected and i cant seem to track them? or why i cant see the comet tails even though i selected to view them?

Werewolf420 wrote:Can someone tell me why i have nebula selected and i cant seem to track them? or why i cant see the comet tails even though i selected to view them?

You certainly are aware that comet tails vanish beyond a distance of the comet of ~ 5 AU from sol. So I take it for granted that you selected only comets that are closer than 5 AU at the time considered? Hence what comets did you exactly select at which time that did NOT show a tail and were closer than 5 AU to sol???

Go and look up some dates when e.g. the comet Halley was close by and I promise you will see a loooooooooooooooong tail

As to nebulae, their implementation is still under heavy development. If you look for galaxies instead, you will most certainly be successful whichever galaxy you choose...

Bye Fridger

Exactly what Nebula are you unable to "track"?
Where did you get it?

Celestia does not (yet) come with any Nebula objects. The ones currently available are all Addons.

t00fri wrote:Go and look up some dates when e.g. the comet Halley was close by and I promise you will see a loooooooooooooooong tail

Here the biggest tail of the solar system :

cel://Follow/C1965_S1(Ikeya-Seki)/2842-05-03T10:04:30.65939?x=QPLOslfA2I1yDA&y=ClKqX3INugIW&z=VYMdiybCw98b&ow=0.745077&ox=-0.079462&oy=0.571380&oz=0.334771&select=C1965_S1(Ikeya-Seki)&fov=27.718887&ts=0.000000&ltd=0&rf=300979&lm=2

and

cel://Follow/C1965_S1(Ikeya-Seki)/2842-05-03T10:04:30.65939?x=VGcTG4kJyrC9DA&y=1XLmf+7mNRI&z=EEpAwJezJxk&ow=0.834553&ox=0.116898&oy=0.200631&oz=0.499604&select=C1965_S1(Ikeya-Seki)&fov=27.718891&ts=0.000000&ltd=0&rf=300979&lm=2

Fightspit,

Unfortunately, I see nothing at those locations.
I suspect they're pointing to Addons that aren't included with Celestia. You'll need to tell us which Addons they are, or provide URLs of comets that are included with Celestia.