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Where is Webb?

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matthew1
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Re: Where is Webb?

Post by matthew1 »

abscate wrote: 19 Mar 2022, 19:54 Known in Sales as “ sandbagging’

If you exceed your target by a large amount, you get a dump truck at the sales meeting
NASA is notorious for this. The Mars Rover was supposed to operate for what, 3 months? Voyager, etc... all those were 10X+ longer-lifed than expected. Maybe 100X.

But hey, if you're going to err, do it over rather than under. Right? :D
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Post by RickHaleParker »

matthew1 wrote: 13 Apr 2022, 16:54 But hey, if you're going to err, do it over rather than under. Right? :D
For NASA or one of the other space agencies ... heck yes. When a mission fails people bitch about the cost. When a mission succeeds nobody gripes about the cost.
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Post by abscate »

Went to David Eisenstein talk at our local OSA section meeting this week. First one in two years.

He is one the people who will be using Webb for the next 10-20 years to image the far reaching galaxies.

The launch was so perfect they used half as much propellant as planned. This means the mission might run 20nyears instead of the expected 10. The propellant Is the limiting factor. You need it to maintain it at the Langragian node. Kind of like slipping the clutch to keep it just before the crest of a hill, if you go over the hill, you get blinded by scattered light.

They detect a photon every 10 seconds or so. After 1500 seconds, the dark count ( background exposure) swamps the signs

Each scientist positions the telescope, collects her 150 photons, then off to analysis.

If we don’t fund another scope andget them a new tool in 20nyears , their careers end and they go and short derivatives on Wall Street instead of studying our universe.
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Post by volvolugnut »

Educate me. OSA is?
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Post by RickHaleParker »

volvolugnut wrote: 21 May 2022, 11:51 Educate me. OSA is?
volvolugnut
Optical Society of America old name for Optica.
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Post by abscate »

Pretty soon I’m going to get 20 lashes with a URO pvc hose for each AWOD I post…..
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Post by BlackBart »

abscate wrote: 21 May 2022, 00:44 Went to David Eisenstein talk at our local OSA section meeting this week. First one in two years.

He is one the people who will be using Webb for the next 10-20 years to image the far reaching galaxies.

The launch was so perfect they used half as much propellant as planned. This means the mission might run 20nyears instead of the expected 10. The propellant Is the limiting factor. You need it to maintain it at the Langragian node. Kind of like slipping the clutch to keep it just before the crest of a hill, if you go over the hill, you get blinded by scattered light.

They detect a photon every 10 seconds or so. After 1500 seconds, the dark count ( background exposure) swamps the signs

Each scientist positions the telescope, collects her 150 photons, then off to analysis.

If we don’t fund another scope andget them a new tool in 20nyears , their careers end and they go and short derivatives on Wall Street instead of studying our universe.
Forwarding to my son the recent Physics major.
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Post by BlackBart »

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Post by abscate »

Actually , the galaxies are about 4, 200,000,000,000 seconds Old give or take a group of zeros I probably b00ted
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Post by BlackBart »

Right!

(but they were hiding... )
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