1730: "Starshade"

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thunk
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1730: "Starshade"

Postby thunk » Wed Sep 07, 2016 4:06 am UTC

Image

Alt-text: The New Worlds Mission is already trying to get funding for this, but NASA sponsored their proposal, so it will be hard to catch the telescope people by surprise with it.

It's for their own good. The telescope people may be disquieted if they see too many stars.
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Re: 1730: "Starshade"

Postby niauropsaka » Wed Sep 07, 2016 6:01 am UTC

"Free-floating"? How does that work?

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Re: 1730: "Starshade"

Postby rhomboidal » Wed Sep 07, 2016 6:05 am UTC

I would absolutely back a self-driving force-shielded jet-pack starshade. For personal use.

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Re: 1730: "Starshade"

Postby orthogon » Wed Sep 07, 2016 8:26 am UTC

The difficulty in designing this starshade is going to be what pattern to go for. By the time it's deployed the colour scheme is going to be so last-season-but-five.
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Re: 1730: "Starshade"

Postby Soupspoon » Wed Sep 07, 2016 9:39 am UTC

One colour on one side, another colour on the flip-side. Rotate according to current tastes.

No, wait... that's so 1960s-reversable-plastic-macs... Remind me when the '60 are due to come round again?

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Re: 1730: "Starshade"

Postby Echo244 » Wed Sep 07, 2016 9:52 am UTC

Soupspoon wrote:Remind me when the '60 are due to come round again?


44 years. ;-P

As for the fashions, god knows. I think the 20s are due for a revival first. But definitely the 60s before the 70s come back again. Or the 80s/90s.

Mind you, it's been a while since corsets and burlesque kind of looks have been a thing, so maybe that first...
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Re: 1730: "Starshade"

Postby Flumble » Wed Sep 07, 2016 10:33 am UTC

niauropsaka wrote:"Free-floating"? How does that work?

It's like the floaters in your eye, only the eye is space and the vitreous humour is vaccuum. Okay, the analogy already breaks down once you mention that floaters lie between the lens and the photosensors, and the fact that floaters make you see less.

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Re: 1730: "Starshade"

Postby cellocgw » Wed Sep 07, 2016 11:16 am UTC

niauropsaka wrote:"Free-floating"? How does that work?


Kind of like Free Fallin' but without the "falling" part.

Or, I suppose, finding the L4 point for the Earth-telescope-shield system would work.

Back to that musical theme, Good Morning, Starshade
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Re: 1730: "Starshade"

Postby da Doctah » Wed Sep 07, 2016 12:12 pm UTC

cellocgw wrote:Back to that musical theme, Good Morning, Starshade


And a gliddy glup gloopy to you too.

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Re: 1730: "Starshade"

Postby Ken_g6 » Wed Sep 07, 2016 1:43 pm UTC

Some people just wanna throw shade on NASA. :roll:

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Re: 1730: "Starshade"

Postby Mahnarch » Wed Sep 07, 2016 2:41 pm UTC

Flumble wrote:
niauropsaka wrote:"Free-floating"? How does that work?

It's like the floaters in your eye, only the eye is space and the vitreous humour is vaccuum. Okay, the analogy already breaks down once you mention that floaters lie between the lens and the photosensors, and the fact that floaters make you see less.



What if we rubbed it with a giant space finger?

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Re: 1730: "Starshade"

Postby ijuin » Wed Sep 07, 2016 5:27 pm UTC

You want to give NASA the finger?

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Re: 1730: "Starshade"

Postby somitomi » Wed Sep 07, 2016 6:33 pm UTC

I read not so long ago, that a future project to measure gravitational waves involves a probe, which has a small mass just floating about in a cavity inside the probe. It took me a while to realise there's nothing radical about that design, since astronauts have been doing the same thing for decades.
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Re: 1730: "Starshade"

Postby Soupspoon » Wed Sep 07, 2016 6:43 pm UTC

It's not just the one, but (at least) a triumvirate of widely-spaced probes passing lasers between them. And the floating within the other craft is (if I'm thinking of the same experiment) in order to maintain the ultimate isolating shock-absorber (LIGO goes to great pains to hang its components from fine glass threads, or somesuch, such that seismic shocks from nearby gnats sneezing don't disturb the various reference mirrors/etc). The central mass is kept isolated from space-weather such that the laser interferiometry (by windows in the outercraft that can afford to be buffetted by the odd stray intrastellar atoms) has the cleanest possible signal to work with.

IIRC.

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Re: 1730: "Starshade"

Postby Keyman » Wed Sep 07, 2016 9:17 pm UTC

Long as we're walking away from the 'subject' (gee, we so rarely do that...)

I read an advanced reader copy of a book... Black Hole Blues and Other Songs from Outer Space by Janna Levin...largely about the search for gravity waves, and with serendipitous timing, their discovery. Very fascinating, and now that it's been released, very much recommended.
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Re: 1730: "Starshade"

Postby Eternal Density » Fri Sep 09, 2016 11:39 am UTC

Echo244 wrote:
Soupspoon wrote:Remind me when the '60 are due to come round again?


44 years. ;-P

As for the fashions, god knows. I think the 20s are due for a revival first. But definitely the 60s before the 70s come back again. Or the 80s/90s.

Mind you, it's been a while since corsets and burlesque kind of looks have been a thing, so maybe that first...
Yeah, lets bring back the 20s. The more reasons to wear our fedoras, the better!

We've got less than 4 years to prepare for the next 20s. Wow.
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Re: 1730: "Starshade"

Postby Mahnarch » Fri Sep 09, 2016 12:49 pm UTC

ijuin wrote:You want to give NASA the finger?


Well, if I can get a tax deduction I would just give them the finger.

Otherwise, they'll have to pry it from my cold, dead hands...

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Re: 1730: "Starshade"

Postby Soupspoon » Fri Sep 09, 2016 1:00 pm UTC

Eternal Density wrote:We've got less than 4 years to prepare for the next 20s. Wow.
Too late for that! A lot of people have been laying the groundwork for the return of the glorious '30s, already!

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Re: 1730: "Starshade"

Postby featinwe » Tue Sep 20, 2016 8:54 pm UTC

NASA just did that... they are creating starshade :D https://www.youtube.com/watch?v=ALGI0ex0-ac


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