News for hackers. Stuff that matters.
Re:Eclipse viewing at 30k feet: Delta to offer path-of-total... by iLoveOncall on Thursday February 22, 2024 @08:34AM (#39466798)
I don't really get the point. 30,000 feet of altitude is only 0.002% closer to the moon than 0. Is this going to change anything?

Seems like just a marketing stunt (which, of course it is, but a pointless one at that).

Re:Eclipse viewing at 30k feet: Delta to offer path-of-total... by crazygringo on Thursday February 22, 2024 @08:46AM (#39466970)
Well, it guarantees you won't have clouds blocking it.

So if turns out to be totally overcast wherever you would have been on the ground, this is going to change everything.

Re:Eclipse viewing at 30k feet: Delta to offer path-of-total... by jsjohnst on Thursday February 22, 2024 @09:35AM (#39467670)
> Well, it guarantees you won't have clouds blocking it.

No it doesn’t. Very low probability, yes, guaranteed to not be clouds, no.

Re:Eclipse viewing at 30k feet: Delta to offer path-of-total... by sumeruchat on Thursday February 22, 2024 @09:40AM (#39467740)
How can there be a cloud cover at FL300 so large that the plane cant navigate out of it?
Re:Eclipse viewing at 30k feet: Delta to offer path-of-total... by jsjohnst on Thursday February 22, 2024 @09:55AM (#39467979)
Lots of scenarios where the pilot isn’t allowed to diverge from a flight path without getting into how freak events happen with the weather all the time.

Cirrocumulus clouds are common on that flight path and can extend up to FL450. Is it rare that they are that high, for sure, but can it happen, definitely.

Cirrostratus clouds are also a possibility and they often extend up to FL400. Whenever the sky has a soft white haze, these are a common cause.

Will either of those guaranteed ruin an eclipse, probably not. But still saying guaranteed no cloud cover obstructing the view is very much inaccurate imho.

Re:Eclipse viewing at 30k feet: Delta to offer path-of-total... by sumeruchat on Thursday February 22, 2024 @11:09AM (#39469163)
Yeah when normal people talk (not pilots) an event with >99 percent probability should be deemed a certainty. As a pilot however i agree with you that you absolutely cannot make any assumptions about cloud cover
Re:Eclipse viewing at 30k feet: Delta to offer path-of-total... by jsjohnst on Thursday February 22, 2024 @01:38PM (#39471207)
Depends on how you define normal people. If you are someone who is ponying up $25k+ for this flight on secondary markets you also should know that the chance is non-zero, albeit close.
Re:Eclipse viewing at 30k feet: Delta to offer path-of-total... by sumeruchat on Thursday February 22, 2024 @09:13PM (#39476105)
Yeah thats fair also.
Re:Eclipse viewing at 30k feet: Delta to offer path-of-total... by gowld on Thursday February 22, 2024 @10:35AM (#39468620)
Cloud cover isn't the same effect as an eclipse. An eclipse still has effect on a cloudy day.

And a cloud in the dark sky looks the same from above vs below. The difference is how the sun itself looks.

Re:Eclipse viewing at 30k feet: Delta to offer path-of-total... by avandermeulen on Thursday February 22, 2024 @08:39AM (#39466864)
The path of totality is only 115 miles wide so from 30,000 feet you would be able to see edges of the shadow below you.

You’re also guaranteed to be able to see the eclipse because you’re flying above any cloud cover.

Re:Eclipse viewing at 30k feet: Delta to offer path-of-total... by hunter2_ on Thursday February 22, 2024 @08:42AM (#39466909)
If you look at a map of the "path of totality" for a total solar eclipse, think of it as a series of small time windows only a few minutes long, where one window ends another begins. I say that as if it's discrete, but really it's continuous and overlapping. Anyway, totality will begin in Texas at 1:27 PM CT and end in Maine at 3:35 PM ET, which is a little more than an hour. So theoretically you could be traveling at the same speed as the eclipse, from Texas to Maine in that hour, seeing an eclipse the whole time instead of just a few minutes!

Of course, the article makes no such claim that this is their plan. After all, planes don't go 2000 MPH. But they do go 600+ MPH, so maybe if things go perfectly you'll have 20 minutes of eclipse. Call it 10 minutes due to inability to rapidly correct for a slightly wrong departure time. Better than the 4 minutes you'd get standing still.

Re:Eclipse viewing at 30k feet: Delta to offer path-of-total... by gowld on Thursday February 22, 2024 @10:36AM (#39468641)
Totality isn't very interesting for longer periods of time, on a plane It's just dark. The transition toward and away from totality is interesting.
Re:Eclipse viewing at 30k feet: Delta to offer path-of-total... by FireBeyond on Thursday February 22, 2024 @11:29AM (#39469458)
Re:Eclipse viewing at 30k feet: Delta to offer path-of-total... by hunter2_ on Thursday February 22, 2024 @10:02PM (#39476460)
True, and the peculiar reaction of animals (brief nocturnal activity) won't be very noticeable from the air either.
Re:Eclipse viewing at 30k feet: Delta to offer path-of-total... by throwaway_13579 on Thursday February 22, 2024 @11:07AM (#39469149)
> planes don't go 2000 MPH

SR-71: hold my beer

Re:Eclipse viewing at 30k feet: Delta to offer path-of-total... by TheCaptain4815 on Thursday February 22, 2024 @08:41AM (#39466885)
Majority of the path has an extremely high chance of cloud coverage (70%), so maybe this alleviates that?

https://eclipsophile.com/wp-content/uploads/2021/02/April-No...

Re:Eclipse viewing at 30k feet: Delta to offer path-of-total... by ethanbond on Thursday February 22, 2024 @09:12AM (#39467298)
It'd definitely alleviate it. I'm going to Vermont to try to see it (coinciding with my wedding) and the weather is really the only thing worrying me at the moment.
Re:Eclipse viewing at 30k feet: Delta to offer path-of-total... by AnimalMuppet on Thursday February 22, 2024 @02:56PM (#39472223)
Congratulations!

If you have bad weather, it may ruin the eclipse. Don't let it ruin the wedding by letting it ruin your attitude.

Re:Eclipse viewing at 30k feet: Delta to offer path-of-total... by ethanbond on Thursday February 22, 2024 @05:50PM (#39474437)
Oh yeah, absolutely prepared for it haha. I appreciate it!

I was able to catch the last eclipse in 2016/17 (?) and am using the wedding to trick all my loved ones into (hopefully) getting to experience one too.

Re:Eclipse viewing at 30k feet: Delta to offer path-of-total... by SkyPuncher on Thursday February 22, 2024 @08:35AM (#39466810)
I imagine it’s pretty cool watching the shadow be cast over the earth.
Re:Eclipse viewing at 30k feet: Delta to offer path-of-total... by elif on Thursday February 22, 2024 @08:54AM (#39467087)
Wouldn't it be the same experience you get on a sunset flight followed by a sunrise flight? It's not like you'd see a spotlight of darkness, it's a gradient and likely too large to see moon curvature.
Re:Eclipse viewing at 30k feet: Delta to offer path-of-total... by dylan604 on Thursday February 22, 2024 @09:35AM (#39467672)
You're trying to conflate the sunset terminator vs the very small and well defined shadow of the moon itself. Totally different concepts. The shadow of the moon is a spotlight of darkness. This is so not the same thing as the Earth rotating out of view of the sun.

For example: https://image.pbs.org/poster_images/assets/buac18-vid-epicmo...

Re:Eclipse viewing at 30k feet: Delta to offer path-of-total... by elif on Thursday February 22, 2024 @09:52AM (#39467928)
How is the edge of that shadow any less blurred than a sunrise or sunset?
Re:Eclipse viewing at 30k feet: Delta to offer path-of-total... by elif on Thursday February 22, 2024 @09:56AM (#39467993)
For example, a normal sunrise you get on thousands of normal flights every day:

https://images.app.goo.gl/BHvD5aBSqkA9kT6C6

Re:Eclipse viewing at 30k feet: Delta to offer path-of-total... by wolverine876 on Thursday February 22, 2024 @05:23PM (#39474158)
In addition to other comments: You see it for much longer than if you are in one place.