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Sunny but black starry sky

Postby Clive2670 » Thu Feb 22, 2018 6:49 pm

I've never encountered this before, Just started a flight from LSZH time set to noon, it was snowing got above the clouds bright sunshine, and can see the scenery but it is a pitch black sky and the stars are visable!!!! :? Anyone got any ideas why? Flightgear is performing normally though
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Can be seen flying the Boeing 777-200LR
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Re: Sunny but black starry sky

Postby wlbragg » Fri Feb 23, 2018 3:47 am

Check your "Earthview" settings.
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Re: Sunny but black starry sky

Postby Thorsten » Fri Feb 23, 2018 5:59 am

Geez- how high up were these clouds??? :mrgreen:
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Re: Sunny but black starry sky

Postby Clive2670 » Fri Feb 23, 2018 12:47 pm

it done it when i took off from zurich, restarted with same settings at Heathrow, and it cured itself??????
Thanks Clive aka: G-BLS01
Can be seen flying the Boeing 777-200LR
Toshiba laptop,
Intel i5 4210U,
16Gb RAM,
AMD R7-M260 graphics 2Gb RAM
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Re: Sunny but black starry sky

Postby wkitty42 » Fri Feb 23, 2018 5:53 pm

FWIW: the stars are always projected on the skydome... use the infrared viewer to see similar in black and white ;)
"You get more air close to the ground," said Angalo. "I read that in a book. You get lots of air low down, and not much when you go up."
"Why not?" said Gurder.
"Dunno. It's frightened of heights, I guess."
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Re: Sunny but black starry sky

Postby Clive2670 » Fri Feb 23, 2018 6:24 pm

Yes I sometimes see them during the day wkitty42.....BUT I mean, above the cloud base (It was daylight on the ground) The WHOLE sky was black as night, Stars out and the sun too!!! Scenery was illuminated like it is during the day VERY weird, I know I should have done a screenshot and posted but didn't think of it at the time. Restarted at EGLL all was fine..So at a loss of what caused it! Will say everything else functioned as normal on the simulator during this hiccup!
Thanks Clive aka: G-BLS01
Can be seen flying the Boeing 777-200LR
Toshiba laptop,
Intel i5 4210U,
16Gb RAM,
AMD R7-M260 graphics 2Gb RAM
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Re: Sunny but black starry sky  

Postby wkitty42 » Sat Feb 24, 2018 5:38 pm

on one of my astronomy programs, we can turn the atmosphere off and see similar... based on that, my eWAG would be that the atmosphere shader wasn't running but i don't know enough and it is too late now, to look deeper... logs and console output but an interesting situation, to say the least :)
"You get more air close to the ground," said Angalo. "I read that in a book. You get lots of air low down, and not much when you go up."
"Why not?" said Gurder.
"Dunno. It's frightened of heights, I guess."
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Re: Sunny but black starry sky

Postby Clive2670 » Wed Feb 28, 2018 6:57 pm

I think this was a one off, as it hasn't happened since! Oh well Flightgear will sometimes throw something into the pot just to keep you amused!
Thanks Clive aka: G-BLS01
Can be seen flying the Boeing 777-200LR
Toshiba laptop,
Intel i5 4210U,
16Gb RAM,
AMD R7-M260 graphics 2Gb RAM
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Re: Sunny but black starry sky

Postby Thorsten » Thu Mar 01, 2018 6:19 am

Did you do a spaceflight before?

Somehow settings can get 'stuck' when you use Earthview, end the FG session and start with basic weather.

(Theoretically a METAR could have mis-reported an abysmally low pressure - that would have also given you a very thin atmosphere - but also have affected your flight dynamics quite a bit...)
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Re: Sunny but black starry sky

Postby Clive2670 » Thu Mar 01, 2018 10:22 am

No Thorsten I didn't, Sadly I haven't quite got my head around the complexaties of the shuttle!! The METAR showed a fairly "normal" 1005 hPa at the time of the flight, And the plane (777) performed as it should, So I was at a loss. Not an issue to me as it hasn't "shown" itself again!
Thanks Clive aka: G-BLS01
Can be seen flying the Boeing 777-200LR
Toshiba laptop,
Intel i5 4210U,
16Gb RAM,
AMD R7-M260 graphics 2Gb RAM
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Re: Sunny but black starry sky

Postby Thorsten » Thu Mar 01, 2018 10:25 am

Then I don't really have an explanation left... maybe a weird one-off quirk.
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Re: Sunny but black starry sky

Postby erik » Thu Mar 01, 2018 10:39 am

I've seen black skies during daytime in the past when the color value became a floating point NaN.

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Re: Sunny but black starry sky

Postby Thorsten » Thu Mar 01, 2018 10:46 am

Shouldn't happen in ALS because of several clamps in critical positions...
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Re: Sunny but black starry sky

Postby Clive2670 » Thu Mar 01, 2018 10:50 am

Well that's it all theories exhausted!!! Shall we "call" this one as answered/unanswered then chaps?
Thanks Clive aka: G-BLS01
Can be seen flying the Boeing 777-200LR
Toshiba laptop,
Intel i5 4210U,
16Gb RAM,
AMD R7-M260 graphics 2Gb RAM
User avatar
Clive2670
 
Posts: 593
Joined: Mon Feb 08, 2016 7:11 pm
Location: Anywhere in the World at some point on Flightgear!
Callsign: G-BLS01
Version: 2018.3.1
OS: Windows 10 64bit

Re: Sunny but black starry sky

Postby Thorsten » Thu Mar 01, 2018 4:59 pm

Should it occur again, please make a note of time and air pressure - otherwise I don't know what to suggest for now, so let's leave it be.
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