Populating WLM (and other galaxies) with REAL stars

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Art Blos M
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Post #81by Art Blos » 15.03.2019, 06:53

Lafuente_Astronomy wrote:Hey Art Blos! How's Celestia Origin Version 8 going?
Development is underway. Release as usual, April 30th. :smile:
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Post #82by Lafuente_Astronomy » 15.03.2019, 07:12

Art Blos wrote:Development is underway. Release as usual, April 30th.

Oh I can't wait! Also, since you added the Martian Rovers, are their places gonna be marked in the "Locations" file?
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Post #83by Art Blos » 15.03.2019, 07:20

Lafuente_Astronomy wrote:Also, since you added the Martian Rovers, are their places gonna be marked in the "Locations" file?
Why designate them locations? It is enough turn on the names of the spacecraft and everything will be visible.
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Post #84by Lafuente_Astronomy » 15.03.2019, 08:09

Ahhh. It was just because they are now on the ground and thus, not considered spacecraft. But you're the boss.
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Post #85by SpaceFanatic64 » 18.03.2019, 23:07

STC Code for the brown dwarf 2M1207. I might do the exoplanet soon.

Code: Select all

"2M1207:2M1207A:2MASS J12073346-3932539"
{
     RA 181.8894583
     Dec  -39.5483333
     Distance 172
     SpectralType "M8p"
     AppMag 20.15
     Radius 173875
     InfoURL "https://en.wikipedia.org/wiki/2M1207"
}
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Post #86by LukeCEL » 20.05.2019, 00:08

Hi, I know I'm a bit late, but also very confused. I certainly remember a "Extrasolar, Stars and Exoplanets for Celestia" thread started by gironde. What happened to that thread?

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Post #87by CM1215 » 20.05.2019, 01:39

LukeCEL wrote:Hi, I know I'm a bit late, but also very confused. I certainly remember a "Extrasolar, Stars and Exoplanets for Celestia" thread started by gironde. What happened to that thread?
I believe it was merged into this thread with the "Populating WLM (and other galaxies) with REAL stars" thread.
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Post #88by LukeCEL » 20.05.2019, 03:39

CM1215 wrote:I believe it was merged into this thread with the "Populating WLM (and other galaxies) with REAL stars" thread.

I understand that. But these two threads are completely separate, so why was that one not turned into an announcement by itself? Why the merge?

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Post #89by Lafuente_Astronomy » 20.05.2019, 04:35

The merge was because I am currently merging some of the previous addons threads about Extrasolar, Stars and Exoplanets in Celestia, in an attempt to unify those addons so that anyone who wants to look for them need not go further and backwards in time, since several good addons may have been lost or "buried", so to speak. It just so happened that your first post is older than gironde's original post, which was the basis for the original post CM1215 mentioned.

Regardless, I'll just make a new official addon post related to any extrasolar but not extragalactic objects, and then hope for the best.
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Post #90by Kilo_SSK » 27.05.2019, 16:30

Since martian rovers were added, are our planet's artificial satellites represented as well? I know it'd be quite the pain to do it due to their sheer number and the classified nature of the military ones, but I think that creating something like 20 different models and multiplying them with an algorithm could be doable and would give a decent representation of the situation.
Plus, it's an ever-growing element of our space landscape. I mean, I was reading the other day an article with a title that reads "How self-driving cars will change the property market" and if this happens, it means that the already huge number of GPS satellites will grow significantly.

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Post #91by LukeCEL » 27.05.2019, 18:15

Hi Kilo_SSK, you should ask toutatis for that. He's our resident expert on making spacecraft add-ons.

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Post #92by Lafuente_Astronomy » 28.05.2019, 06:01

Kilo_SSK, here's toutatis' thread in question: viewtopic.php?f=23&t=18024&start=1080
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Post #93by Kilo_SSK » 29.05.2019, 06:03

Great, thanks! The thread's already packed full of info, I'll read it through and through and see how many questions I still have afterwards?

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Post #94by Lafuente_Astronomy » 29.05.2019, 07:10

Kilo_SSK wrote:Great, thanks! The thread's already packed full of info, I'll read it through and through and see how many questions I still have afterwards?

Yep. Take your time. After all, there's lots of threads filled with information scattered throughout the Forum
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Post #95by LukeCEL » 21.12.2019, 05:15

After a long hiatus, I have finished another add-on.

Here's about 3900 stars in the Triangulum Galaxy (M 33). Compared to the Andromeda Galaxy, I could use more stars; combined with the fact that the Triangulum Galaxy is smaller means that the coverage just looks a lot nicer.

A famous star, Romano's Star, disappeared when I was working through the spreadsheet. I have no idea why. I allow stars if SIMBAD says the probability of membership is at least 90%, and Romano's Star definitely makes the cut. If anyone wants the star I'll write some specific code for it.

Enjoy:
Attachments
triangulum_galaxy.stc.zip
(90.69 KiB) Downloaded 23 times

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Post #96by SevenSpheres » 21.12.2019, 18:50

Nice! Though, could you possibly redo the LMC? Currently it's missing several well-known stars, such as R136a1. FWIW, here is a recent paper on some binary stars in the LMC.
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Post #97by LukeCEL » 21.12.2019, 22:39

SevenSpheres wrote:could you possibly redo the LMC? Currently it's missing several well-known stars, such as R136a1.

I don't know if I can do that much about the LMC missing stars like R136a1. Even though R136a1 is clearly part of the LMC, SIMBAD doesn't say anything about it's membership. I don't know why.

I could just add them in by hand, but that would be annoying and then there'd be no end to what I could potentially put in these files.

SevenSpheres wrote:FWIW, here is a recent paper on some binary stars in the LMC.

Looks interesting, thanks. I don't think any of those stars are in my LMC file, due to the reasons stated above, but I'll see.

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Post #98by LukeCEL » 31.01.2020, 04:13

Hey everyone, here's some more files.

The first file adds over 1200 stars in Leo I. The second file adds about 380 stars in Leo II.

I've also done Leo A, but the file only has about 50 stars, so it's hardly populated by any means. However, in the default version of Celestia, Leo A is rendered as a blob (Type "Irr") and not its more elongated shape. So, for the stars to actually fit in the galaxy, I did make an updated definition for Leo A:

Code: Select all

Galaxy "Leo A:DDO 69"
{
        Type  "E5"
        RA            9.9906
        Dec          30.7464
        Distance   2.251e+06 # method: rgb
        # Radius        1533
        Radius          3658
        AbsMag        -11.36
        Axis    [  0.8684  -0.3442   0.3569]
        Angle     164.758
        InfoURL  "http://simbad.u-strasbg.fr/sim-id.pl?Ident=Leo A"
}


Enjoy:
Attachments
leo_i.stc.zip
(27.81 KiB) Downloaded 10 times
leo_ii.stc.zip
(9.39 KiB) Downloaded 10 times
leo_a.stc.zip
(2.19 KiB) Downloaded 10 times
Last edited by LukeCEL on 01.02.2020, 13:09, edited 1 time in total.

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Art Blos M
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Post #99by Art Blos » 31.01.2020, 05:35

Yeah! Continue to populate the galaxies. :smile:
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Post #100by LukeCEL » 01.02.2020, 02:37

This file adds 270 stars in the Phoenix Dwarf (and the nearby area, since it's quite widely distributed).

Enjoy:
Attachments
phoenix_dwarf.stc.zip
(6.36 KiB) Downloaded 11 times


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