Adding an atmosphere to Crab PSR NP0532/HIP 333340

[Cham]

I installed the Crab pulsar addon NP0532/HIP 333340. It's nice, but it lacks some realism without any glowing. I want to add an atmosphere to this pulsar, but I'm unable to make it to work.

The crab pulsar.ssc file contains only this code :

"Crab Pulsar" "HIP 333340"
{
Mesh "psr1257.3ds"
Emissive true
Radius 80000
# orbital data
EllipticalOrbit {
Period 1000
SemiMajorAxis 0.0
Eccentricity 0.0
Inclination 0.0
}

RotationPeriod 0.00004
Albedo 1

}

When I add an atmosphere, it doesn't show. Is it possible or is there a limitation of Celestia ?

[ElPelado]

You can't put an atmosphere in a mesh(your pulsar is a mesh)... only in planets/moons...

[selden]

ElPelado,

Well, you can, but It may cause Celestia to crash. I'm trying to characterize the bug now. I really think it ought to work.

Cham,

Where did you get your NP0532 Addon? The only pulsar Addon that I have does not include its own 3DS model.

[Cham]

I found two great pulsars with models here :

http://63.224.48.65/~rassilon/

The third one, the one I'm talking about, well, I can't remember.

[Cham]

Selden, what is your pulsar ? Where can I find it ?

There's not enough pulsar to my taste in my Celestia folder !

(Geez, Celestia makes me like a little kid !!!)

[selden]

Cham,

I only have the pulsar that Rassilon created using comets, so you must already have it. I'll look at his Web page again for the other one.

[Cham]

We should be able to put a glow on the pulsar, because the other pulsars I installed (PSR B1620/HIP 465000 and PSR 1257) have a nice star glow.

In the M1 crab nebula stc file, there is this definition for NP0532/HIP 333340 :

# HIP 333340
333340 "NP0532" {
RA 83.6332083
Dec 22.01447222
Distance 6300.0000
SpectralType "T9V"
AppMag 70.00 # Radii: 164.730741232034
}


In the Crab pulsar .ssc file, only this :

"Crab Pulsar" "HIP 333340"
{
Mesh "psr1257.3ds"
Emissive true
Radius 80000
# orbital data
EllipticalOrbit {
Period 1000
SemiMajorAxis 0.0
Eccentricity 0.0
Inclination 0.0
}

RotationPeriod 0.00004
Albedo 1

}


Where should I add something to give the pulsar a glow like the others ?

[Cham]

Very very strange ! In the above data, I just changed the line

AppMag 70.00 # Radii: 164.730741232034

to this line :

AppMag 20

And guess what ? It gave me a super giant brown dwarf (default red texture) with a nice red glow ! What the ... ?

[Cham]

Okay, I changed the spectral type to SpectralType "R0VI" and it gave me a red star, with the pulsar deep inside it.

I'm rediscovering the spectral types. The lines

SpectralType "T9V"
AppMag 70.00 # Radii: 164.730741232034

appears to be very important. But I don't know how to edit them so the pulsar takes a nice white glow.

[Cham]

I almost got it to work. After many experimentations, I edited the star definition to this :

#SpectralType "T9V" #(original data in this addon)
#AppMag 70.00 # Radii: 164.730741232034 #(original data)
SpectralType "Q0V"
AppMag 27.5

Now, the pulsar has a nice white glow, but as soon as I get relatively close to it, it suddenly change to a full white star, without any pulsar texture. I have the same problem with the PSR 1257 addon. It's a mix between a red star and a pulsar. When I get relatively close to it, I lost one of the two. Is there a way out of this ?

How can we select a star texture ?