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| Murrarym | ||||| Sunday, March 03, 2002 - 08:29 pm
What is the science and new technology that will enable the Hubble to be 10 times more powerful?
Who invented it and manufactured it? |
| Dave | ||||| Sunday, March 03, 2002 - 08:37 pm
Read all about ACS on this site: "Mission Critical". The ACS has more than twice the field of view and nearly five times the resolution of the Wide Field Planetary Camera 2. (5 times 2 equals 10) Basically the detector is larger and better. |
| evil-ed | ||||| Sunday, March 03, 2002 - 10:09 pm
There is not one invention or manufacturer that made this great improvement. The improvement is generally made possible by improvements in the detector technology, and also optimizations in the coatings that are used in the optics. For the Advanced Camera for Surveys, the detectors are Charge-Coupled Device (CCD) sensors made by Scientific Imaging Technologies, Inc (SITe). The coatings are pure silver, with a protective overcoat, and are produced by Denton (I think ... not sure right now). The instrument design also emphasizes improving the efficiency in the red end of the light spectrum by combining these technical improvements. |
| evil-ed | ||||| Sunday, March 03, 2002 - 11:13 pm
regrettably, i must admit that old fart is correct ... to an extent! while it is true that ball aerospace manufactured the instrument, the concept for the instrument evolved from a team of scientists and engineers. determining a single "inventor" and allocating credit in this way would not only be grossly unfair, but also as hard as determining who invented the PC (using his own analogy). i am answering a legitimate question using facts that are verifiable and defendable. perhaps if he had more to do, he would not be ranting and raving on this site late at night. |
| evil-ed | ||||| Sunday, March 03, 2002 - 11:33 pm
old fart is a little defensive ... i do not see how you can think i implied you were stinky. i like old people. i have nothing against them. the ACLU will discover that i am one myself. however, i am not sure i understand what an astrometrics researcher does other than poke at funny buttons on fictional TV shows. |
| some people think Im a dumb chick | ||||| Monday, March 04, 2002 - 07:23 am
what is astrometrics anyway? The ability to calculate astronomical distances in metric units? |
| Dave | ||||| Monday, March 04, 2002 - 07:39 am
Astrometry is the accurate measurement of the angular separation between two objects in the sky. I assume astrometrics is something similar. |
| Donnie | ||||| Monday, March 04, 2002 - 01:48 pm
I am a student in Clear Lake, Texas and I have been fascinated by the real-time TV presentation of the on- orbit Hubble servicing on the NASA Select channel. I am somewhat confused by some of the protocols. When the spokesperson from the MCC at JSC calls up to the astronaut there is usually a ready response to a request for information. However when the astronaut calls down for information there is a significant delay in response. It cannot be a time delay, as that would work the same in both directions. Could it be that the ground communicator has no clue as to what is going on? |
| Dave | ||||| Monday, March 04, 2002 - 01:50 pm
"metrics" typically implies "measurement", not statistics or analysis. Sometimes statistics are used, sometimes not.
7 of 9 was aboard Voyager, not enterprise. Astrometrics on Voyager was essentially the space equivalent of cartography. Map making. |
| pilot442000 | ||||| Monday, March 04, 2002 - 01:58 pm
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| evil-ed | ||||| Monday, March 04, 2002 - 01:59 pm
donnie. i have often wondered about this myself. since you have raised this question, i will try to send it along to the crew. they may be able to offer more insight. |
| Bert | ||||| Monday, March 04, 2002 - 03:18 pm
I'd like to go back to Murrarym's question of what is ment by saying the "new" Hubble be 10 times more powerful. Dave's answer was fine as far as it went but ACS means Advanced camera for Surveys, as pointed out by others, so it should be 10x better at Surveying. But the ACS will replace the space now occupied by the Faint Object Camera. So is there a downside here? I have seen numerous articles about the 10x enhancement to the current Wide Field Planetary Camera 2 but not a single word about any effect of the loss of the FOC. Would someone be good enough to enlighten me? |
| Dave | ||||| Monday, March 04, 2002 - 03:25 pm
The FOC is a first generation instrument. It is the only remaining original instrument on HST. Although it is a fine machine, for the past several years it has been rarely used by investigators. |
| Bert | ||||| Monday, March 04, 2002 - 04:11 pm
Thanks for the info on the FOC. I'm surprised to find that it hasn't been used more. From the name I would have thought it useful for plotting supernova output in distant galaxies. Or can other instruments do that? Come to think of it, that can be done from Earth based scopes just as well. Also the "money" shots that keep people interested in Hubble are closer to home and that's not an unimportant consideration, unfortunately. |
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