Celestia Forums

Hello,

I was checking out the European 11 aug 1999 solar eclips and found that the moon is very much to smal to cover sun (or is the sun to large?). What you get is a 'ring of fire'. Set Celestia 1.3.2 to 11 aug 1999 at 49N-6E around 10:30 UTC and watch the eclips from earth surface. It should be total. Anyway I was looking for the corona effects in Celestia; but that's maybe not programmed.

Maybe not a bug, but shouldn't the moon be brown/red during total? I checked this out for the mooneclips of 28 october 2004.

Thanks for your attention and cheers,

Ton Lindemann

Ton,

It looks fine on my system.

What Field-of-View angle are you using? A wide angle view of 25-45 degrees or a telescopic view of 1-5 degrees? (Type , and . to change the FOV angle.)

Which star style are you using? "Scaled discs", "fuzzy points" or "points"? (Type a Ctrl-S several times to step through them.)

If you use a wide angle view and "scaled discs", then Celestia draws a circle that represents the Sun's brightness, not the Sun's size. The circle that Celestia draws is larger than the "real" Sun. On my system, this combination produces a bright ring that looks to me like what you describe.

Increasing the magnification so the FOV is less than 25 degrees or changing to "fuzzy points" will make the bright ring go away.

Does this happen for you?

Selden,

Thanks for your answer.

My screen is set on 1024*768 and soon as I go to a telescopic view with a smaller field as 18° then the sun's disc is larger in any mode. I didn't use the scaled disk option, but tried the two others. In both other options moondisc's are smaller at greater maginifications.

BTW: I changed the graphic card, but get the warning that this FX 5x00 types are a bit outdated too! They are still available on special request, but not on stock in our stores.

Cheers,

Ton Lindemann

Gee.
I don't know what to say.

Here's a cel:// url for the viewpoint that I used:

cel://SyncOrbit/Sol:Earth/1999-08-11T10:31:00.78816?x=c0pWS4GnD6PJDA&y=CD6bBtRXFA&z=ubO8hTXBaaUK&ow=0.910314&ox=0.027184&oy=-0.408564&oz=0.060544&track=Sol&select=Sol&fov=7.271070&ts=0.000000<d=0&rf=103939&lm=3

p.s. That's strange. Do they have any Nvidia cards in stock? Too often I've had the experience of salespeople saying something isn't made any more when the real problem is just that their store doesn't sell that product.

In the U.S. Nvidia 5nnn cards are still readily available. The FX5700LE became available just recently, for example. (I bought one for my home system.) Of the newer cards, only the various 6800 models are available, although the 6600s are supposed be available RealSoonNow. My understanding is that there will be no version of the 6200 for AGP slots. Supposedly that is because Nvidia doesn't want to destroy sales of their 5nnn cards.