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#71
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News: Hubble plans and policy
In article ,
Jason Rhodes wrote: Turn HST over to amateur astronomers, who will operate it for free. If you exclude the possibility of future Shuttle maintenance missions, the costs of operating HST consist entirely of labor... I imagine the hundreds of HST-related employees at Goddard Space Flight Center and the Space Telescope Science Institute will be very surprised to hear that their jobs could be done for free by amateur astronomers. It's quite likely that a rather smaller organization could do those jobs, if it was put together well, especially if you are willing to accept reduced efficiency. (Part of the reason why Hubble operations are very labor-intensive is intense pressure to get maximum use out of the thing.) And it's a rare professional job that is so arcane that you couldn't find an amateur who could do it, given some investment of time to come up to speed on the details. The best amateurs are very good indeed; in astronomy in particular, there is no sharp dividing line between amateurs and professionals. The problem is finding enough of those very good people and motivating them to invest the time and effort. As I noted in another posting, I don't think the amateur-man-hours pool is anywhere near what would be needed. Not to mention the fact that your claim that "the costs of operating HST consist entirely of labor" completely discounts telemetry, computing, and data storage costs. It's unlikely that there would be any grievous difficulties with computing and storage, especially given some relaxation of requirements. As noted in another posting, communications is a more serious problem. -- MOST launched 1015 EDT 30 June, separated 1046, | Henry Spencer first ground-station pass 1651, all nominal! | |
#73
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News: Hubble plans and policy
Henry Spencer wrote on Thu, 31 Jul 2003 19:09:22 GMT:
: Brian Thorn wrote: Hubble launched with the aperture facing forward. Silly idea... how about loading it in the payload facing aft for return? That would put the much-heavier main mirror/instrument section well forward of where it was for launch. :HS Trouble is, I think that puts it *too* far forward. Hubble is heavy :HS enough that the permissible range of center-of-mass locations is limited; :HS it may include the center of the cargo bay (for still heavier loads it :HS doesn't), but it certainly doesn't extend much forward of there. The overriding concern I would think is that the mirror support structure normally works better for loading aimed downward from the front of the mirror to the back, If the mirror were facing the rear of the cargo bay, it would have to be supported, "hanging in the straps" style against the 3G maximum accelleration during launch. Facing forward, it is pressed down into a support structure that can freely support the back and sides of the mirror instead of just the edges of the mirror. While observing, I often have nightmares of pointing our telescope too far over and having the mirror roll out of the tube and on down the mountain road.... Jim. Jim Scotti Lunar & Planetary Laboratory University of Arizona Tucson, AZ 85721 USA http://www.lpl.arizona.edu/~jscotti/ |
#74
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News: Hubble plans and policy
"Hallerb" wrote in message
... Heres a EXCELLENT reason to keep hubble around untill at least the Webb observatory is operational. What if Webb is somehow lost? It's hardly likely that someone would steal the body. He's quite safe. -- If you have had problems with Illinois Student Assistance Commission (ISAC), please contact shredder at bellsouth dot net. There may be a class-action lawsuit in the works. |
#75
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News: Hubble plans and policy
"Keith F. Lynch" wrote in message ... Derek Lyons wrote: Labor, plus consumeables of various types, plus electricity, plus maintenance on the hardware, plus upkeep on the building... Henry Spencer wrote: I think Keith envisioned closing the existing infrastructure entirely, rather than moving volunteer labor into it. Right. Amateurs would operate it from their homes, using their own electricity, computer power, radios, etc. As noted in my previous posting, I don't think that's practical for something as complex as Hubble. I disagree. There isn't anything about being *paid* which makes someone smarter. No, but it does give motivation and make freeing up time easier. :-) I.e. if setting up an observation run takes 8 hours, a paid person considers that a work day. A volunteer considers that a long night. Not that it doesn't happen. Just sometimes harder to find volunteers willing to do it. -- Keith F. Lynch - - http://keithlynch.net/ I always welcome replies to my e-mail, postings, and web pages, but unsolicited bulk e-mail (spam) is not acceptable. Please do not send me HTML, "rich text," or attachments, as all such email is discarded unread. |
#76
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News: Hubble plans and policy
"Keith F. Lynch" wrote:
Derek Lyons wrote: Labor, plus consumeables of various types, plus electricity, plus maintenance on the hardware, plus upkeep on the building... Henry Spencer wrote: I think Keith envisioned closing the existing infrastructure entirely, rather than moving volunteer labor into it. Right. Amateurs would operate it from their homes, using their own electricity, computer power, radios, etc. So long as the guy who coordinates things doesn't take sick or go on vacation. So long as the guy with the radio doesn't die and his wife locks everyone else out of the house (watched that happen with a BBS/computer club). So long as the guy whose house the system manuals are currently out doesn't suffer a fire (as happened to a RR club a buddy is in)... Lots of possible pitfalls. As noted in my previous posting, I don't think that's practical for something as complex as Hubble. I disagree. There isn't anything about being *paid* which makes someone smarter. You may disagree. You may also be ignorant of the complexity of the system you wish to turn over to volunteers. Historically large complex systems operated by volunteers have a very hard time locating and keeping competent volunteers. The very largest resort to dues and a paid staff to overcome this problem. D. -- The STS-107 Columbia Loss FAQ can be found at the following URLs: Text-Only Version: http://www.io.com/~o_m/columbia_loss_faq.html Enhanced HTML Version: http://www.io.com/~o_m/columbia_loss_faq_x.html Corrections, comments, and additions should be e-mailed to , as well as posted to sci.space.history and sci.space.shuttle for discussion. |
#77
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News: Hubble plans and policy
NOTHING ELSE LOOKS AS GOOD TO THE PUBLIC AS HUBBLE!
The Hubble returns a large amount of useful science. The uh astronomers who use it want to keep it operating in order to gather more data. |
#78
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News: Hubble plans and policy
"Henry Spencer"
The fact that Hubble was okay if pointed forward, but only if set as far forward as possible, suggests that it probably isn't okay the other way around, even if set as far aft as possible. 'NASA had originally planned to fetch it with the space shuttle and put it in the Smithsonian's Air and Space Museum, but that now seems "exceedingly unlikely," in Dr. Kinney's words.' The current orbit is good until at least 2013. The Hubble advocates are looking at two service missions and then a de-orbit mission, say in 2020 or later. If the second service mission could attach a de-orbit motor, it would save the cost of developing a space tug. (The unmanned space tug seems to be a natural for our Russian friends). NASA says an uncontrolled re-entry is unacceptable, but I would lay better than even odds that it comes down when it feels like it, which at this point is shortly after 2013. |
#79
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News: Hubble plans and policy
In message , Kent Betts
writes "Henry Spencer" The fact that Hubble was okay if pointed forward, but only if set as far forward as possible, suggests that it probably isn't okay the other way around, even if set as far aft as possible. 'NASA had originally planned to fetch it with the space shuttle and put it in the Smithsonian's Air and Space Museum, but that now seems "exceedingly unlikely," in Dr. Kinney's words.' If they did that, who would get the backup ? (which is already there, or was. They removed some parts for the real thing a few years ago) -- "Roads in space for rockets to travel....four-dimensional roads, curving with relativity" Mail to jsilverlight AT merseia.fsnet.co.uk is welcome. Or visit Jonathan's Space Site http://www.merseia.fsnet.co.uk |
#80
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News: Hubble plans and policy
On 31 Jul 2003 22:40:24 -0400, "Keith F. Lynch"
wrote: I disagree. There isn't anything about being *paid* which makes someone smarter. ....Agreed. In fact, most of the really dumb decisions made by corporate marketing goons are made by the ones who have degrees that say they're smarter than the average goon. OM -- "No ******* ever won a war by dying for | http://www.io.com/~o_m his country. He won it by making the other | Sergeant-At-Arms poor dumb ******* die for his country." | Human O-Ring Society - General George S. Patton, Jr |
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