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1730: "Starshade"

Posted: Wed Sep 07, 2016 4:06 am UTC
by thunk
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.

Re: 1730: "Starshade"

Posted: Wed Sep 07, 2016 6:01 am UTC
by niauropsaka
"Free-floating"? How does that work?

Re: 1730: "Starshade"

Posted: Wed Sep 07, 2016 6:05 am UTC
by rhomboidal
I would absolutely back a self-driving force-shielded jet-pack starshade. For personal use.

Re: 1730: "Starshade"

Posted: Wed Sep 07, 2016 8:26 am UTC
by orthogon
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.

Re: 1730: "Starshade"

Posted: Wed Sep 07, 2016 9:39 am UTC
by Soupspoon
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?

Re: 1730: "Starshade"

Posted: Wed Sep 07, 2016 9:52 am UTC
by Echo244
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...

Re: 1730: "Starshade"

Posted: Wed Sep 07, 2016 10:33 am UTC
by Flumble
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.

Re: 1730: "Starshade"

Posted: Wed Sep 07, 2016 11:16 am UTC
by cellocgw
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

Re: 1730: "Starshade"

Posted: Wed Sep 07, 2016 12:12 pm UTC
by da Doctah
cellocgw wrote:Back to that musical theme, Good Morning, Starshade


And a gliddy glup gloopy to you too.

Re: 1730: "Starshade"

Posted: Wed Sep 07, 2016 1:43 pm UTC
by Ken_g6
Some people just wanna throw shade on NASA. :roll:

Re: 1730: "Starshade"

Posted: Wed Sep 07, 2016 2:41 pm UTC
by Mahnarch
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?

Re: 1730: "Starshade"

Posted: Wed Sep 07, 2016 5:27 pm UTC
by ijuin
You want to give NASA the finger?

Re: 1730: "Starshade"

Posted: Wed Sep 07, 2016 6:33 pm UTC
by somitomi
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.

Re: 1730: "Starshade"

Posted: Wed Sep 07, 2016 6:43 pm UTC
by Soupspoon
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.

Re: 1730: "Starshade"

Posted: Wed Sep 07, 2016 9:17 pm UTC
by Keyman
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.

Re: 1730: "Starshade"

Posted: Fri Sep 09, 2016 11:39 am UTC
by Eternal Density
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.

Re: 1730: "Starshade"

Posted: Fri Sep 09, 2016 12:49 pm UTC
by Mahnarch
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...

Re: 1730: "Starshade"

Posted: Fri Sep 09, 2016 1:00 pm UTC
by Soupspoon
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!

Re: 1730: "Starshade"

Posted: Tue Sep 20, 2016 8:54 pm UTC
by featinwe
NASA just did that... they are creating starshade :D https://www.youtube.com/watch?v=ALGI0ex0-ac