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Being given two 'Hubbles' is a problem for NASA
Posted: Wed Oct 03, 2012 5:48 pm
by Smivs
One of NASA's more unpredictable problems for sure! They are a gift from the shadowy National Reconnaissance Office and are
in storage and there is no obvious funding for them. So it seems that NASA are a bit unsure how to deal with this windfall.
Re: Being given two 'Hubbles' is a problem for NASA
Posted: Wed Oct 03, 2012 7:22 pm
by Greyth
Ah, the replicators must be back online
I wonder if they'll test these ones before launching them..
Re: Being given two 'Hubbles' is a problem for NASA
Posted: Thu Oct 04, 2012 8:10 am
by Selezen
Money money money.
If every Elite/Oolite fan donated a dollar, would they be able to fly the telescopes?
Re: Being given two 'Hubbles' is a problem for NASA
Posted: Thu Oct 04, 2012 10:32 am
by Commander McLane
Selezen wrote:Money money money.
If every Elite/Oolite fan donated a dollar, would they be able to fly the telescopes?
Or what if the military donated a dollar or two? They had enough money to
build two of the things (as opposed to—say—NASA), so they obviously can't be short on cash.
Re: Being given two 'Hubbles' is a problem for NASA
Posted: Thu Oct 04, 2012 7:52 pm
by CommRLock78
Commander McLane wrote:Selezen wrote:Money money money.
If every Elite/Oolite fan donated a dollar, would they be able to fly the telescopes?
Or what if the military donated a dollar or two? They had enough money to
build two of the things (as opposed to—say—NASA), so they obviously can't be short on cash.
Agreed CML - $#%&# the military. They've got money to spend out the wahzoo - let them donate a couple bucks.
Re: Being given two 'Hubbles' is a problem for NASA
Posted: Thu Oct 04, 2012 8:25 pm
by Tricky
The military could launch the telescopes. Saves NASA some more money.
(Yes I know NASA is a military operation run as a public entity)
Re: Being given two 'Hubbles' is a problem for NASA
Posted: Fri Oct 05, 2012 9:37 am
by DaddyHoggy
Could they put the two telescopes in diametrically opposed geostationary orbit? They could take stereoscopic images of the sky then. (The Sky at Night - now in 3D!)
Re: Being given two 'Hubbles' is a problem for NASA
Posted: Fri Oct 05, 2012 10:32 am
by Disembodied
The Hubble binoculars?
Re: Being given two 'Hubbles' is a problem for NASA
Posted: Fri Oct 05, 2012 2:33 pm
by Commander McLane
Re: Being given two 'Hubbles' is a problem for NASA
Posted: Sat Oct 06, 2012 1:02 pm
by Greyth
Sad truth is these units are obsolete in that it is now possible to use an array of small digital scopes placed further apart somewhat like the ocular arrangements of insects. Theoretically it would be possible to cheaply create a scope with a dish many hundreds of miles across. Makes one wonder what the military use these days.
http://www.seti.org/ata
Re: Being given two 'Hubbles' is a problem for NASA
Posted: Sat Oct 06, 2012 1:40 pm
by Cody
Seeing mention of SETI... someone is now actively searching for
Dyson Spheres.
Re: Being given two 'Hubbles' is a problem for NASA
Posted: Sat Oct 06, 2012 1:59 pm
by JensAyton
Greyth wrote:Sad truth is these units are obsolete in that it is now possible to use an array of small digital scopes placed further apart somewhat like the ocular arrangements of insects. Theoretically it would be possible to cheaply create a scope with a dish many hundreds of miles across. Makes one wonder what the military use these days.
http://www.seti.org/ata
Single-dish
optical telescopes (like Hubble) are by no means obsolete. Several ground-based telescopes in the 30–40-metre range (using segmented mirrors) are currently projected, such as the [wp]European Extremely Large Telescope[/wp] (replacing the cancelled 100-metre Overwhelmingly Large Telescope). These cost over a billion Euros each – almost as much as the first two stages of the
SKA, the biggest telescope anyone’s seriously considered building – so we’re not talking about toys. And, of course, most of the science budget Nasa does have is going to the infra-red [wp]James Webb Space Telescope[/wp].
On the other hand, the fact that we
can build 40-metre telescopes on the ground and use adaptive optics to make it worthwhile means that space-based optical telescopes are less interesting now than they were in the seventies.
Re: Being given two 'Hubbles' is a problem for NASA
Posted: Sat Oct 06, 2012 2:52 pm
by Commander McLane
Ahruman wrote:Single-dish optical telescopes (like Hubble) are by no means obsolete. Several ground-based telescopes in the 30–40-metre range (using segmented mirrors) are currently projected, such as the [wp]European Extremely Large Telescope[/wp] (replacing the cancelled 100-metre Overwhelmingly Large Telescope). These cost over a billion Euros each
Seems odd that the OLT was cancelled due to its costs, considering that it costs just one-and-a-half times as much as the EELT. Or is there a serious underestimation (at least an order of magnitude worth) in its calculation?
Re: Being given two 'Hubbles' is a problem for NASA
Posted: Sat Oct 06, 2012 6:11 pm
by JensAyton
Commander McLane wrote:Seems odd that the OLT was cancelled due to its costs, considering that it costs just one-and-a-half times as much as the EELT.
Half a billion one way or another over ten years isn’t much for, say, a military budget, but we’re talking about a science budget that’s been hashed out over several years by fifteen different parliaments. You’ll note the E-ELT itself has been downsized to three quarters of its initial size. If we’re lucky, it will still be bigger than one of those Keyhole satellites by the time it’s actually built. ;-)
Re: Being given two 'Hubbles' is a problem for NASA
Posted: Sat Oct 06, 2012 8:27 pm
by Greyth
Well, o.k. Ahruman - dishes are still in service and some are still on the board - so obsolete was, perhaps, a poor choice of word.
Nevertheless a virtual disk makes all other dishes obsolete by dint of performance and hideously expensive by comparison to convention scopes. By putting them in space the size of the dish is almost without limits and even planet bound arrays can form dishes many miles wide for a fraction of the cost.