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Problème de positions de quelques constellations #4085

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Payetmakes opened this issue Jan 17, 2025 · 8 comments
Open

Problème de positions de quelques constellations #4085

Payetmakes opened this issue Jan 17, 2025 · 8 comments
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opinion OP thinks something should behave differently subsystem: skycultures The issue is related to skycultures of planetarium...

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@Payetmakes
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Bonjour,
il semblerait que certaines constellations austral soient mal positionnées .

Voir les fichiers joint.

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@gzotti
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gzotti commented Jan 17, 2025

You are free to provide a pull request with well-reasoned description about which artwork should be repositioned and why you want to reposition these figures. Note that the colored figures are an add-on which is not included in the regular distribution.

@gzotti gzotti added opinion OP thinks something should behave differently subsystem: skycultures The issue is related to skycultures of planetarium... labels Jan 17, 2025
@10110111
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@gzotti Which add-on is this? As for the mispositioning, try opening these two images and switch between them: the images switch positioning, which shouldn't be like this even for a custom SC.

@gzotti
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gzotti commented Jan 17, 2025

UH! This was IIRC an optional download (drop-in replacement of the artwork) years ago which I expected to see again in https://stellarium.org/skycultures-list.html. But it's not here. Or they were hosted elsewhere. @alex-w do you know where this is currently available? It was just the default skyculture (state around 2010-15?) with colored artwork.

OP has inverted a few figures like Indus, Fornax and Columba. Placement of the figures is artistic liberty and interpretation, see H.A. Rey's inverted Cetus, Taurus, Ursa Major etc. He may argue that the figures in the respective original atlases were oriented in some other ways. Just saying "some are misplaced" with spot-the-difference pictures is not enough. Especially when he must have already solved his problem.

@alex-w
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alex-w commented Jan 17, 2025

I know a few versions of colored western sky cultures.

@Payetmakes where you downloaded the sky culture?

@10110111
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Especially when he must have already solved his problem.

Oh, I thought these screenshots were from a single run, with jumping pictures on a slight movement of the camera. So, yeah, the OP should tell more about the situation.

@Payetmakes
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La culture du ciel est une version coloré de celle de stellarium. je l'ai depuis très longtemps et je je sais plus comment je l'ai eu.
J'ai modifié le fichier constellationart.fab pour les positionner. Il ne s'agit pas d'une version artistique de ma part, par exemple
Alpha Hydri (α Hyi / α Hydri) est une étoile de la constellation de l' Hydre mâle de magnitude apparente +2,86 2. Elle est parfois appelée informellement Tête de l'Hydre 9. Elle ne doit pas être confondue avec Alpha Hydrae de la constellation de l'Hydre.
[Alpha Hydri — Wikipédia].
j'ai utilisé une ancienne carte pour repositionner quelques constellations pour la plupart ceux de Lacaille

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@gzotti
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gzotti commented Jan 17, 2025

And what problem does the current standard version of Stellarium (24.4) have with identification of α Hya vs. α Hyi?

As said, the appearance of figures is not standardized, only the sky areas are. you can propose re-orienting the figures according to Lacaille by showing your file edits. But Stellarium's modern skyculture was created by a contemporary artist who had his own ideas where e.g. Hydrus has its head, some figures may not be easy to turn around.

@Payetmakes
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Et quel problème la version standard actuelle de Stellarium (24.4) a-t-elle avec l’identification de α Hya par rapport à α Hyi ?

Comme dit, l’apparence des figures n’est pas normalisée, seules les zones du ciel le sont. vous pouvez proposer de réorienter les figures selon Lacaille en montrant les modifications de vos fichiers. Mais la skyculture moderne de Stellarium a été créée par un artiste contemporain qui avait ses propres idées où, par exemple, Hydrus a sa tête, certaines figures peuvent ne pas être faciles à inverser.

il n'y à pas de problème d'identification entre les Etoiles alpha de l'hydre male et femelle. α Hyi est souvent considéré comme la tête de l'hydre et sur la version par défaut c'est la queue de l'hydre, mais ce n'est pas le seul exemple, la constellation de la table (montagne) à été placé de manière à avoir le grand nuage de magellan au dessus, faisant penser aux nuages présent régulièrement au dessus de cette montage. Cest vrai que ces constellations ne sont pas tres brillante et on peut les orienter d'une certaine façon, sans forcement gêné ,même si c'est incorrect . Si on prend la constellation du lion il serait plus difficile de mettre la tête vers Dénébola.

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Labels
opinion OP thinks something should behave differently subsystem: skycultures The issue is related to skycultures of planetarium...
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