Posts by Sirius_Alpha

by Sirius_Alpha
Yesterday, 20:30
Forum: Add-on releases
Topic: Tiangong - Chinese Space Station
Replies: 5
Views: 146

Re: Tiangong - Chinese Space Station

Stage 1 - Tianhe Core Module Tianhe1.jpg Here is the first stage of the construction of the Tiangong Space Station, the Tianhe core module. This addon shows the deployment of Tianhe in orbit - solar arrays, high-gain antenna and aft antennas. Video preview: https://youtu.be/kBGW4Ca1f6k (Edit: Fixed ...
by Sirius_Alpha
Yesterday, 20:26
Forum: Add-on releases
Topic: Tiangong - Chinese Space Station
Replies: 5
Views: 146

Tiangong - Chinese Space Station

Tiangong_Complete.jpg China has launched a space station. Inspired by Linuxm@n's ISS models, I have begun work on a fairly detailed project to chronicle the progress of construction of this space station. This thread, like the extrasolar planets catalogue thread , will be a repository for updates t...
by Sirius_Alpha
10.06.2021, 20:24
Forum: Ideas & News
Topic: Increase the size of galactic and star bases
Replies: 34
Views: 9416

Re: Increase the size of galactic and star bases

And of course, if I remember, ESO has been planning a GAIA successor for sometime now There are no firm plans for a Gaia successor as far as I know. The idea has been floated, and I think we would all love to see that, but there might be some benefit to waiting a bit because a) Astrometric solution...
by Sirius_Alpha
08.06.2021, 01:52
Forum: Celestia Users
Topic: Pictures from Celestia
Replies: 675
Views: 140281

Re: Pictures from Celestia

<shameless plug>
You can always download the latest catalogue of extrasolar planets here.
by Sirius_Alpha
07.06.2021, 16:47
Forum: Physics and Astronomy
Topic: Juno Ganymede flyby
Replies: 9
Views: 455

Re: Juno Ganymede flyby

Less than an hour now from closest approach.
by Sirius_Alpha
06.06.2021, 18:46
Forum: Textures
Topic: Unsatisfied with the appearance of gstars in Celestia (1.6.2.2 and earlier)
Replies: 10
Views: 428

Re: Unsatisfied with the appearance of gstars in Celestia (1.6.2.2 and earlier)

The "flare" overlaid on top of the base texture brightens it a lot within Celestia. You will need to dim the actual texture to compensate for that to make it look closer to what you want it to in Celestia. At least how I've understood your question. For everyone else in this thread: Please...
by Sirius_Alpha
01.06.2021, 01:17
Forum: Add-on releases
Topic: Extrasolar Planets (updated catalogue)
Replies: 95
Views: 85612

Re: Extrasolar Planets (updated catalogue)

TESS has found it's second circumbinary planet system! Also, Adams, et al updated their analysis of numerous Kepler-K2 systems, so the disposition of numerous planets has been changed. While a number of relatively anonymous EPIC ID planets have been relegated to unconfirmed, K2-299 gained a fourth p...
by Sirius_Alpha
27.05.2021, 23:46
Forum: Celestia Users
Topic: Just checking in
Replies: 5
Views: 535

Re: Just checking in

I'm happy to see you have returned!
by Sirius_Alpha
01.05.2021, 01:10
Forum: Add-on releases
Topic: Extrasolar Planets (updated catalogue)
Replies: 95
Views: 85612

Re: Extrasolar Planets (updated catalogue)

Not a very busy month in extrasolar planets. Gurren informs me that this is two years now of this project. That's kind of wild, to be honest. :weirdface: Screenshot.png 01 May 2021 - 46 TESS candidate planets added (TOI-2579 through TOI-2634). - 18 TESS candidate planets have been determined to be f...
by Sirius_Alpha
11.04.2021, 16:05
Forum: Add-on releases
Topic: oumuamua (disk/pancake)
Replies: 8
Views: 1443

Re: oumuamua (disk/pancake)

Cubic's model is based on `Oumuamua light curve data, and is pretty consistent with the "flat pancacke" hypothesis for its shape. There's nothing wrong with filling in our gaps of knowledge about the finer details. It's what you did with the texture. All this, Bayesianism notwithstanding o...
by Sirius_Alpha
02.04.2021, 02:07
Forum: Add-on releases
Topic: Extrasolar Planets (updated catalogue)
Replies: 95
Views: 85612

Re: Extrasolar Planets (updated catalogue)

Up to this point, I have been using the formulae in Grant Hutchison's starorbs.xls spreadsheet to convert the orbits of planets as expressed in the literature (that is, with respect to the plane of the sky) to the ecliptic plane which Celestia uses. However, these formulae do not deal well with orbi...
by Sirius_Alpha
01.03.2021, 23:52
Forum: Add-on releases
Topic: Extrasolar Planets (updated catalogue)
Replies: 95
Views: 85612

Re: Extrasolar Planets (updated catalogue)

Well, we've got a possible planet orbiting α Cen A from direct imaging. That's exciting. We're also over ten thousand total planets, including the unconfirmed planets , though I look forward to celebrating ten thousand confirmed exoplanets with you all in the near-future. Alf_Cen_Ab.jpg 01 March 202...
by Sirius_Alpha
19.02.2021, 22:46
Forum: Add-on releases
Topic: Ceres 32K Texture Addon
Replies: 5
Views: 1649

Re: Ceres 32K Texture Addon

trappistplanets wrote:it is?
SecondFuckingSentenceOMFG.png
by Sirius_Alpha
01.02.2021, 04:31
Forum: Add-on releases
Topic: Extrasolar Planets (updated catalogue)
Replies: 95
Views: 85612

Re: Extrasolar Planets (updated catalogue)

It was a fairly decent month, with numerous updated systems and new planets. January saw the first planet discovered by CHEOPS - HD 108236 f. In a two-planet system, if only one planet has a known inclination, then the programme I use to create this addon will assume the other's is coplanar (or set ...
by Sirius_Alpha
31.01.2021, 21:30
Forum: Add-on releases
Topic: Ceres 32K Texture Addon
Replies: 5
Views: 1649

Ceres 32K Texture Addon

A user Antdoghalo on the Unmanned Spaceflight forum created a 32K map texture for Ceres a few days ago ( here ). I have turned it into a Virtual Texture for use in Celestia. Simply extract the .rar file into your extras folder, as I have already added the .ssc and .ctx files to make it all work. You...
by Sirius_Alpha
05.01.2021, 09:51
Forum: Add-on releases
Topic: Chang'e 3, 4 and 5 (lunar surface elements)
Replies: 1
Views: 811

Chang'e 3, 4 and 5 (lunar surface elements)

In an attempt to learn how to make models for Celestia, I have created the Lunar surface elements of the Chang'e 3, 4 and 5 missions. Since I barely know what I'm doing with this, I make no claim to be presenting a high-quality add-on here, and the models should be viewed as more notional than accur...
by Sirius_Alpha
01.01.2021, 08:18
Forum: Add-on releases
Topic: Extrasolar Planets (updated catalogue)
Replies: 95
Views: 85612

Re: Extrasolar Planets (updated catalogue)

I hope everyone has had a decent holiday season. This update doesn't really have a whole lot -- apparently the last month has been rather boring. 01 January 2021 - 22 TESS candidate planets added (TOI-2415 through TOI-2436). - 15 TESS candidate planets have been determined to be false positives sinc...
by Sirius_Alpha
02.12.2020, 02:11
Forum: Add-on releases
Topic: Extrasolar Planets (updated catalogue)
Replies: 95
Views: 85612

Re: Extrasolar Planets (updated catalogue)

Some new TESS Sector 29 and 30 planet candidates are out. For some transiting planets, the stated inclination in literature (or in the NASA Exoplanet Archive) can be a tricky thing to use. Converting it directly into sky-plane coordinates for Celestia should produce an orbit geometry that has the de...
by Sirius_Alpha
21.11.2020, 01:46
Forum: Celestia Users
Topic: Pictures from Celestia
Replies: 675
Views: 140281

Re: Pictures from Celestia

Are you planning on making it public for download?
by Sirius_Alpha
15.11.2020, 02:30
Forum: Physics and Astronomy
Topic: Should we reply to the WOW! Signal?
Replies: 2
Views: 1526

Re: Should we reply to the WOW! Signal?

What are the G magnitudes of these stars? My concern is two-fold. a) You present a list of fewer than a hundred candidates to search. Given the incidence of transiting planets, it is quite possible that none of these stars host transiting planets in their habitable zones, where the transit probabili...

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