Crash in eclipse browser

[danielj]

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.

[selden]

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

[danielj]

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

[danielj]

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.

[danielj]

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...

[selden]

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

[t00fri]

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.

[danielj]

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

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

[selden]

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

[Johaen]

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

[selden]

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).

[BobHegwood]

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.

[chris]

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

[selden]

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.

[Johaen]

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.

[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.

How consistently does the lockup happen?

--Chris

[selden]

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.

[BobHegwood]

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...

[danielj]

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...

[Johaen]

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