200.000.000 star

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Daly
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200.000.000 star

Post #1by Daly » 22.08.2020, 16:46

hello I made 3,500,000 star from the gaia catalog
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Kepler-442bComp2.jpg
Imagen-5bf77e968c973.jpg
Last edited by Daly on 23.08.2020, 03:34, edited 2 times in total.

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Post #2by jujuapapa » 22.08.2020, 17:02

Daly wrote:hello I made 1,000,000 star from the gaia catalog
Well.

Do you know that ajtribick made one of 2,463,589 stars from the same catalog ?
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Post #3by Daly » 22.08.2020, 19:10

Gaia has 180 files like that, I just wanted to show how complicated it is to add the stars,
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Gaia-0.rar
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Trolligi 112477
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Post #4by Trolligi 112477 » 22.08.2020, 19:39

jujuapapa wrote:Do you know that ajtribick made one of 2,463,589 stars from the same catalog ?

Can you at least say congratulations and not just seemingly discourage him like that? :fie:

Added after 24 minutes 2 seconds:
Jujua, I bet you can’t even do 2000 stars. :razz:
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Post #5by DrJMOS » 22.08.2020, 23:27

Hi Daly, addon is about 200000000 or 1000000 stars?

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Post #6by Gurren Lagann » 23.08.2020, 00:54

The file has a little over 1.3 million stars.
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Post #7by Daly » 23.08.2020, 03:45

The files weigh a lot so I will upload them for part 2, it is missing 200,000 stars, there are I add them.
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Gaia-2.rar
(28.17 MiB) Downloaded 13 times
Gaia-1.rar
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Gaia-0.rar
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Post #8by jujuapapa » 23.08.2020, 04:48

Trolligi 112477 wrote:
jujuapapa wrote:Do you know that ajtribick made one of 2,463,589 stars from the same catalog ?

Can you at least say congratulations and not just seemingly discourage him like that? :fie:

Jujua, I bet you can’t even do 2000 stars. :razz:

Why did not you take the entire answer ??? :eek:
It was just an information following a question.
As usual, your level is under the ground... :eek: :fie:

.../...

but the most important:
Added after 12 minutes 35 seconds:
Daly wrote:The files weigh a lot so I will upload them for part 2, it is missing 200,000 stars, there are I add them.
Interesting ! :clap:

Can you explain us the used method ? :wink:
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Post #9by Daly » 23.08.2020, 06:22

the files are named by dec there are 180 in total each one contains 1,500,000 aprox stars gaia page published the catalog with the parameters, in parallax for the distance, and mag blue, green, red with excel and knowing the formulas you can do but believe me you have to know something about spectrocopy.


here are the pages

https://gea.esac.esa.int/archive/

Here they are without the apparent movement

http://www.gaia2.de/catalog.html
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Imagen-5bf77e968c973 - copia.jpg

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Post #10by Trolligi 112477 » 23.08.2020, 07:44

jujuapapa wrote:As usual, your level is under the ground... :eek: :fie:

The fact that you have the courage to insult anyone under your age (Presumably more than 50) makes you look like a toxic and ageist person sometimes.

Anyways, moving swiftly on...
Welp, we did it bois. We found life outside of the Earth.



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Post #11by jujuapapa » 23.08.2020, 10:34

Good beginning Daly ! :clap:

The work will be hard because "Gaia aims to measure the characteristics of more than a billion celestial objects (stars, asteroids, galaxies, etc.) up to magnitude 20", and there are lot of files on the given directory... :eek:

My first return:
To reduce the size of the files, can you think that some numbers can be rounded (temperature (1234), absolute magnitude (12.34),...) ?

FYI : The uncompressed catalog needs 16.4 GB space at your hard disk. It contains 1.026.562.268 stars. :eek:
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Post #12by Sirius_Alpha » 23.08.2020, 12:28

A few months ago I generated a stars.dat file that contained a billion (fictional) stars to see how well it loaded in Celestia. The programme loaded up and when it got to stars.dat it just sat there. Task Manager showed it was taking up more and more memory (no doubt due to loading the .dat file) up until it reached a certain point where it seemed it could not go any further. At that point everything just sat there not really doing anything.
Exoplanet nerd. I maintain a monthly-updated exoplanet catalogue here:
https://celestia.space/forum/viewtopic.php?f=23&t=18705

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Post #13by Daly » 28.08.2020, 01:55

Fix a problem that I had with the zeros, it no longer looks squared and I corrected the magnitude equation. Probe the celestial did not reach 5,000,000 stars. It sounds a strange sound and it stays stagnant. I wanted to put this image of how I stay.
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Post #14by Gurren Lagann » 28.08.2020, 02:32

You just reached a point that you crashed Celestia using STC files. The strange sound might be your PC's fans spinning waaay quickier than normal.
"The tomorrow we're trying to reach is not a tomorrow you had decided on!"
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Post #15by jujuapapa » 28.08.2020, 05:01

OK, I had none problem with the third stc files. :wink:
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Post #16by Daly » 28.08.2020, 07:05

I do it with dec here are the four, also according to the data the galaxy is curved with a star path to the great Magellanic cloud.
I plan to make a collage later
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Gaia-26.rar
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Imagen-5bf77e968c973 - copia.jpg
Imagen-5bf77e968c973 - copia - copia.jpg
Gaia+0+1+2.rar
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Post #17by Gurren Lagann » 28.08.2020, 14:31

Actually, that path isnt actually counted as part of the Milky Way. You found the Magellanic Stream, which links the Milky Way to the LMC and SMC.
Its actually a real thing btw: https://apod.nasa.gov/apod/ap130815.html
"The tomorrow we're trying to reach is not a tomorrow you had decided on!"
- Simon the Digger
"Nothing is impossible for me, as long I'm determinated to keep moving forward!"
"If other people aren't going to do it, I'm going to do it myself!"
- Me (Gurren)

Current major projects:
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- Cel+
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- An galaxy generator

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Post #18by Daly » 05.09.2020, 03:50

Here are more degrees
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Post #19by jujuapapa » 05.09.2020, 05:51

Downloaded, installed and tested this morning ! :wink:

'my' celestia 1.6.2 is very very long to read the file (more 5'20"...) :eek:
And my PC is strong (Core I9-9900 4GHz, RAM 32 GB...) :wink:

I think that it's not a good solution for the actual celestia... :fie:
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Post #20by ajtribick » 05.09.2020, 10:11

Regarding the comments about loading times...

Putting the full Gaia catalogue into Celestia won't work. You need to choose some subset of it.

Celestia loads the entire star database into memory, and builds the octree at startup. This does not scale to billions of stars. (From experience, it's also extremely painful running debug builds)

This is not to say it's impossible to come up with a solution for this, but it would require fundamentally altering how Celestia handles its star database. Gaia Sky pre-builds the octree so can load relevant subsets of the star database from disc on demand.


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