Author Topic: JWSTelescope  (Read 2532 times)

Beardy

  • What’s this do?
  • I’ve always wondered where this was
Re: JWST
« Reply #25 on: 26 December, 2021, 06:26:22 pm »
And there’s a lot of it for something to go wrong. It’s not as if they had the luxury of designing in redundancy given the payload restrictions.
Sorting my life out, one shed at a time.

Re: JWST
« Reply #26 on: 27 December, 2021, 12:51:16 am »
Scope for unpredictable failure conditions too with an Xmas day launch:

T42

  • Patron saint of the dry joint
Re: JWST
« Reply #27 on: 27 December, 2021, 09:21:13 am »
But they never got to Carcassonne.

woollypigs

  • Mr Peli
    • woollypigs
Re: JWST
« Reply #28 on: 28 December, 2021, 11:16:17 am »
Current mood: AARRRGGGGHHHHH !!! #bollockstobrexit

Re: JWST
« Reply #29 on: 28 December, 2021, 11:47:31 am »
^ :thumbsup:

quixoticgeek

  • Mostly Harmless
Re: JWST
« Reply #30 on: 28 December, 2021, 11:49:32 am »


I have an ESA branded "remove before launch" tag I was given by one of the ground control crew from the ISS.

The space stuff all has before launch, not before flight...

J
--
Beer, bikes, and backpacking
http://b.42q.eu/

quixoticgeek

  • Mostly Harmless
Re: JWST
« Reply #31 on: 28 December, 2021, 11:55:57 am »





J
--
Beer, bikes, and backpacking
http://b.42q.eu/

T42

  • Patron saint of the dry joint
Re: JWST
« Reply #32 on: 29 December, 2021, 04:25:48 pm »
Looks like sunshield deployment has been at least partially successful: the status page is showing large temperature differences between cold & hot sides.
But they never got to Carcassonne.

Re: JWST
« Reply #33 on: 29 December, 2021, 04:35:45 pm »
And that's before the sunshield is fully deployed. They're still folded up and not due to be stretched out in place until Day 6, and then fully tensioned on Day 7.
Rust never sleeps

Pingu

  • Put away those fiery biscuits!
  • Mrs Pingu's domestique
    • the Igloo


Re: JWST
« Reply #36 on: 29 December, 2021, 05:39:12 pm »
Beyond the moon, -150 deg C, and cruising at 2,000mph.  That's worse than the BCM audax.
And Darkness and Decay and the Coronavirus held illimitable dominion over all.

Re: JWST
« Reply #37 on: 29 December, 2021, 06:39:45 pm »





J
So cool.
I want.
It makes my 'Remove before flight' tags pale into insignificance.

Kim

  • Timelord
Re: JWST
« Reply #38 on: 29 December, 2021, 08:24:09 pm »
JWST status page:

https://www.jwst.nasa.gov/content/webbLaunch/whereIsWebb.html


For sensible units: https://www.jwst.nasa.gov/content/webbLaunch/whereIsWebb.html?units=metric

...with improbable accuracies  ::-)

I bet the sensors are reading in Celsius/Kelvin and it's being converted from degrees SCIENCE to degrees Frankenstein and back.

Re: JWST
« Reply #39 on: 29 December, 2021, 08:34:34 pm »
JWST status page:

https://www.jwst.nasa.gov/content/webbLaunch/whereIsWebb.html


For sensible units: https://www.jwst.nasa.gov/content/webbLaunch/whereIsWebb.html?units=metric

...with improbable accuracies  ::-)

I bet the sensors are reading in Celsius/Kelvin and it's being converted from degrees SCIENCE to degrees Frankenstein and back.

Probably mV, mA or something like that.

It just bugged me that the temperatures were quoted in integer degF (but to two DP  ::-)) then converted to degC with the same 2DP.

Kim

  • Timelord
Re: JWST
« Reply #40 on: 29 December, 2021, 08:45:54 pm »
I squinted at the page source to see if it was doing the conversion in the browser, and now I wish I hadn't.

Jaded

  • The Codfather
  • Formerly known as Jaded
Re: JWSTelescope
« Reply #41 on: 30 December, 2021, 12:16:10 pm »
It is 389k miles away now, and some kind of little separation tower is deployed.
If you don't like your democracy, vote against it.

Pingu

  • Put away those fiery biscuits!
  • Mrs Pingu's domestique
    • the Igloo
Re: JWSTelescope
« Reply #42 on: 30 December, 2021, 07:21:58 pm »
Sunshield covers released.

Zed43

  • prefers UK hills over Dutch mountains
Re: JWSTelescope
« Reply #43 on: 30 December, 2021, 07:33:51 pm »
JWST is now expected to have a 10+ year lifespan due to the precision of the Arianespace Ariane 5 launch, which exceeded the requirements needed to put Webb on the right path.

quixoticgeek

  • Mostly Harmless
Re: JWSTelescope
« Reply #44 on: 30 December, 2021, 07:36:48 pm »
JWST is now expected to have a 10+ year lifespan due to the precision of the Arianespace Ariane 5 launch, which exceeded the requirements needed to put Webb on the right path.

This is excellent news. I'm still holding out hope that they come up with a robotic refueling mission.

J
--
Beer, bikes, and backpacking
http://b.42q.eu/

Re: JWSTelescope
« Reply #45 on: 03 January, 2022, 03:52:32 pm »
Does anyone know why the sunshield tensioning has been re-scheduled ?
Rust never sleeps

Pingu

  • Put away those fiery biscuits!
  • Mrs Pingu's domestique
    • the Igloo

Re: JWSTelescope
« Reply #47 on: 03 January, 2022, 04:56:48 pm »
Aha !   Thank you.
Rust never sleeps

Re: JWST
« Reply #48 on: 03 January, 2022, 07:17:57 pm »
I bet the sensors are reading in Celsius/Kelvin and it's being converted from degrees SCIENCE to degrees Frankenstein and back.

TIL: according to that website, the opposite of "Metric" is "English"  :facepalm:

TI actually L: I was wondering whether it was getting a bit crowded at the L2 "point" and how big a point it actually is, but it turns out that the various telescopes do not just orbit the sun but also orbit the L2 point. How they orbit something that's not actually there and so doesn't have any gravity is some kind of magic to do with gravitational wells or something.
Quote from: tiermat
that's not science, it's semantics.

Cudzoziemiec

  • Моя планета голубая, я люблю тебя и обнимаю
Re: JWSTelescope
« Reply #49 on: 03 January, 2022, 08:23:22 pm »
"English" seems a sensible term in that context. They don't want to use "Imperial" because they're American (and if they gave measurements of volume or weight, "Imperial" would be incorrect anyway), and they don't want to use "US customary measures" because they're aware that they have an international audience. But the three countries which don't officially use metric measures all speak English to some degree, and the vast majority of people choosing to see miles and fahrenheit will be English speakers.
Riding a bike through a city is like navigating the collective neural pathways of a vast global mind.