Celestia Forums

Celestia 1.5.0 pre 5 crashes when I try to find lunar eclipses in the eclipse browser.This don??t happen with solar eclipses.It starts loading and then appear the message "not answering" and I have to close it.

Daniel,

That's not a crash, that's a CPU-bound loop.
A crash is when Celestia exits unexpectedly.

You should consider installing pre6 which is now available. See its Sticky in the Users Forum.

Confirmed in v1.5.0pre5
Fxed in v1.5.0pre6

CPU bound loops continues in Celestia 1.5.0 pre6.
Maybe the Earthshine addon is causing this.I will try to remove it...

Nope.I take the Earthshine addon off the Addons folder and the problem remains.This ONLY happens with the moons eclipses,not with the solar eclipses.Another thing:when I select solar eclipse on Earth,I can??t see the Moon shadow on Earth,from space.

No,I was wrong.The shadow is shown both in Celestia 1.4.1 and 1.5.0 pre6.But there wasn??t a eclipse browser causing a CPU bound loop in Celestia 1.4.1.Only in Celestia 1.5.0...

Daniel,

What inputs are you providing to the Eclipse browser?

It only takes a second or two on my system and lists 4 eclipses when I use the default values:

Lunar Eclipses
On Earth
From: 21 Jan 2007
To: 21 Jan 2009

An annoyance: I can't copy-and-paste the dates. The first and last ones are

Earth Moon 3 Mar 2007 20:20 06:02
...
Earth Moon 16 Aug 2008 18:27 05:27

danielj wrote:No,I was wrong.

Nothing new...

The shadow is shown both in Celestia 1.4.1 and 1.5.0 pre6.But there wasn??t a eclipse browser causing a CPU bound loop in Celestia 1.4.1.Only in Celestia 1.5.0...

F.

Maybe you are using Linux or Mac,and not Windows.

selden wrote:Daniel,

What inputs are you providing to the Eclipse browser?

It only takes a second or two on my system and lists 4 eclipses when I use the default values:

Lunar Eclipses
On Earth
From: 21 Jan 2007
To: 21 Jan 2009

An annoyance: I can't copy-and-paste the dates. The first and last ones are

Earth Moon 3 Mar 2007 20:20 06:02
...
Earth Moon 16 Aug 2008 18:27 05:27

Daniel,

I'm using Windows.
Here's my configuration:

1GB, 3.4GHz P4-550; WinXP Pro, sp2
256MB GF 7800 GTX, ForceWare v169.21
Celestia v1.5.0pre6

I get no error when using the Eclipse browser in pre6, or pre5 for that matter.

Of course, much of what Celestia calculates depends on the current time of day and the configuration of the planets. (Shades of astrology ) I wonder if this problem might have a cause like that. Could the time zone perhaps be affecting it? Since it's a bug, it'll be related to something that couldn't possibly be the cause.

Pre5 consistently goes into an apparently never-ending loop for me when I select lunar eclipse prediction. It's warming my CPU even as i type

Oh, this is interesting. Pre6 is now looping for me, too. It worked fine on my computer at work, a Core2Duo. This looping is happening on a P4-550.

Perhaps it's a problem related to the FPU and/or the precision of the calculation. Or how high the full moon is in the sky right now (which it is -- full that is, and above the horizon).

selden wrote:
Oh, this is interesting. Pre6 is now looping for me, too. It worked fine on my computer at work, a Core2Duo. This looping is happening on a P4-550.

Selden, No problems for me in either version. Just FYI.

If anyone can give me some dates that consistently cause this bug to occur, please let me know. I have one idea what could be going wrong, but I can repro the bug in the first place to verify that I've affected anything.

--Chris

Chris,

I'm just using the defaults provided by Celestia when it starts up, selecting Lunar Eclipses.

Right now those are On: Earth From: 22 Jan 2007 To: 22 Jan 2009.

Oh, hmm. Are those TDB or UT? It doesn't say.

I just tried it again. No loop of any kind in either version. This is testing a default installation. As soon as it starts up, choose Eclipse Finder, Lunar, Compute. No errors.

selden wrote:Chris,

I'm just using the defaults provided by Celestia when it starts up, selecting Lunar Eclipses.

Right now those are On: Earth From: 22 Jan 2007 To: 22 Jan 2009.

Oh, hmm. Are those TDB or UT? It doesn't say.

How consistently does the lockup happen?

--Chris

On my computer at home, they happen every time. It doesn't seem to matter what else I've done with Celestia before selecting the Lunar Eclipse option.

Johaen wrote:I just tried it again. No loop of any kind in either version. This is testing a default installation. As soon as it starts up, choose Eclipse Finder, Lunar, Compute. No errors.

Exactly what I did too Selden, Chris. No problems at all on my machine.
Just FYI...

The same happened to lunar eclipses on Jupiter.It could be a bad translation problem.Because my Celestia is translated to Portuguese.However in the eclipse browser("buscador de eclipse"),the eclipse types are in DIFFERENT LANGUAGES.It is written like this: "solar eclipses" and "eclipses lunares".Maybe Celestia is getting confused and this should be reason of the CPU bound loop.Worst than that,all my scripts are in Spanish...

I'd try it at work, but I don't think the USAF would appreciate me installing Celestia on one of their computers.