Weekly 1.22.2-5a6889b: can't select certain objects

[Menno5]

Expected Behaviour

When clicking a indicated and labeled object, the object gets selected with a box around it and information is shown in the upper left corner

Actual Behaviour

When a indicated and labeled object is clicked, the object is not selected. Instead, the nearest star (if any) is selected.
Not all objects have this: all galaxies are getting selected for example.
Here a few examples that are not clickable/selectable: SH2-170 (Little Rosette Nebula), NGC 7822, Sh2-132 (Lion Nebula), NGC 7423, PK 064+15 1, LBN 742, NGC 1491 (Fossil Footprint Nebula)

This is just a small example. Most SH objects are not clickable

Steps to reproduce

See actual behaviour.

System

• Stellarium version: 1.22.2-5a6889b Windows 64bit
• Operating system: Windows 10 22H1
• Graphics Card: MSI GeForce RTX 2080 Ti Gaming X Trio

[alex-w]

Please share your config.ini

[Menno5]

As requested, here is the config.ini

config.zip

[alex-w]

Sorry, I cannot reproduce the issue on macOS in same version (I tried your and my configs).

P.S. @gzotti @10110111 @worachate001 could you check the issue on your systems?

[worachate001]

Tested on Windows 10 and Ubuntu 20.04. I cannot reproduce the issue on both machines.

[gzotti]

cannot reproduce on Win10 21H2 either. When the nebula icons are switched on (not necessarily visible), the object can be selected. That is, if you have activated the SH2 catalog!

[Menno5]

Tested here again.
Found in Sky And Viewing Option under DSO. Normally I have a Limit Magnitude there. When that box is checked, the objects are not selectable. When I uncheck the box, only than the objects are selectable.
I presume this is caused by the fact that they do not have magnitude data when I check on the upper left? It only mentions moderate, medium, and so on, brightness there.

[gzotti]

That's possible. But when I activate limit mag, NGC1491 loses its hint.

[Menno5]

If you mean with hints, the info in the upper left corner: yes.
When limit mag is activated, no hints and not selectable on NGC1491. When limit mag not activated, hints are there and it is selectable.

[gzotti]

No, hint=icon. (green square. )

So that means, objects with unknown magnitude are not displayed and not selectable when magnitude limiter is active.

Well, how to deal with that? Handle as mag8 in such case? Or as mag14? How to deal with missing data?

[Menno5]

Ah ok, that's a hint :)
I do know that in the 7 July v0.22.2 build, it did gave a hint with mag limiter active. In this Weekly build not.

[gzotti]

I think in July I fixed one problem in this area. Maybe I introduced a new one... For now, disable the limiter.

[alex-w]

Is the issue resolved now?

[gzotti]

I recommended that for now at least @Menno5 should disable the delimiter.

FYI the last fix in this area was #2563 in mid-August, following a discussion in a German astro forum.
If you don't see a truly working fix within 5 minutes, It can at least be pushed to 1.1. But without data about object magnitude, IMHO we cannot evaluate object magnitude here...

[gzotti]

The point to keep under observation is the difference of magnitude (pure data item, may be 99 for unknown) and Nebula::getVisibilityLevelByMagnitude() (needed for display/visibility filter decisions; May introduce de-facto false values!)

[Menno5]

I just did see that this got the Opinion tag, so let me clarify :)
Normally I use the magnitude limit setting to show objects that are in range of my scope and camera.
I then am exploring in Stellarium until I see something of interest and zoom in on that. But with the magnitude limit set, some objects without magnitude info, still are showing but no electable. Like NGC1491 which is within reach of my setup. It is showing a hint but it's not selectable for the extra info. In this info is for example also the RA/Dec On Date info if I want to use that for my mount to point to.
For now I have set the magnitude limit to Off and the disadvantage here, is that it's showing now a lot of objects (I have a small f/10 FOV) and have to click each one before I can see if it's doable or not.

As for a solution, a suggestion: add an option under or besides Limit Magnitude where we can check to show Brightest, Moderate and/or Low brightness objects? Because that info is most of the time in the description when there is no magnitude data available. That way a magnitude limit can be used and brightness. For example a limit MAG 14 objects and Moderate brightness.
Of course, when I am the only one (or very few users with me) who used Stellarium this way, it's a non issue :)
But I think I'm not the only one, seeing #2716 where I'm pretty certain it's the same issue.

[gzotti]

The fix mentioned above chose an arbitrary fallback mag=12 for all objects with unknown magnitude. If some info about brightness is available elsewhere, consistently, in all cases, of course this could be extended. This is really a matter of a few more if(...)s. Just which existing data can we exploit with which rules?

[github-actions]

Hello @Menno5!

Please check the fresh version (development snapshot) of Stellarium:
https://github.com/Stellarium/stellarium-data/releases/tag/weekly-snapshot

[github-actions]

Hello @Menno5!

Please check the latest stable version of Stellarium:
https://github.com/Stellarium/stellarium/releases/latest