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The distance from the Hubbles orbit to Earth is not infinity when referencing telescopes that are typically set up to view infinity as one would have when viewing the universe. This is why the mirror was flawed, it's a fact as it happened because when the spy satellite disguised as a telescope was launched it WAS NOT A FUNCTIONING TELESCOPE. Not sure why anyone would argue this as nothing that the government produces is what it says it is, remember when Hughes was mining manganese and really lifting a Soviet sub? Actually giving this camera a dual use made it more functional in the long run, but it did take photos of the Earth, with the highest resolution ever I do believe.
Quote from: Europa on 19/07/2021 23:56:48The distance from the Hubbles orbit to Earth is not infinity when referencing telescopes that are typically set up to view infinity as one would have when viewing the universe. This is why the mirror was flawed, it's a fact as it happened because when the spy satellite disguised as a telescope was launched it WAS NOT A FUNCTIONING TELESCOPE. Not sure why anyone would argue this as nothing that the government produces is what it says it is, remember when Hughes was mining manganese and really lifting a Soviet sub? Actually giving this camera a dual use made it more functional in the long run, but it did take photos of the Earth, with the highest resolution ever I do believe.You have no understanding of optics the Hubble's primary mirror is about 8 feet in diameter a mirror of this size has a point of infinity of around 300 kilometres that means that if it is in focus on an object as close as 300 kilometres it needs no more in focus for objects at a further distance than that and the Hubble telescope was focused to look into infinity and it could look at the earth as the earth is further away than 300 kilometres but they don't waste time looking at the earth with the Hubble telescope as it was placed in orbit to study the universe. If the Hubble telescope was to focus on an object say 1 kilometre away it would have to move its camera /detector out of the craft so don't be silly and talk about a simple optical function that even your little telescope you have at home has. You know the focus tube moving in and out.
Well if the Hubble was placed in orbit to study the universe the knuckleheads doing the math really screwed up huh, because it could not focus on anything. In actuality it was working perfectly when orbiting over the Kremlin. So you seem to be in denial of what is really happening and or happened. Carry on, and do tell us again that the US government never lies about it's spy satellites. LOL times infinity to the trillionth power.
Quote from: Europa on 20/07/2021 00:44:40Well if the Hubble was placed in orbit to study the universe the knuckleheads doing the math really screwed up huh, because it could not focus on anything. In actuality it was working perfectly when orbiting over the Kremlin. So you seem to be in denial of what is really happening and or happened. Carry on, and do tell us again that the US government never lies about it's spy satellites. LOL times infinity to the trillionth power.The mirror was ground and polished incorrectly and it was a big embarrassment to the manufacturer but it was corrected on a later shuttle mission with small optics placed in front of the camera the problem was just like having bad eyesight so the telescope got corrective lenses.
That is exactly what the public was told, in reality the mirror was ground to the perfect specs if the mirror was turned onto the Earth
Quote from: Europa on 20/07/2021 01:05:32That is exactly what the public was told, in reality the mirror was ground to the perfect specs if the mirror was turned onto the EarthNo the telescope is in perfect focus at 300 kilometres and the earth is 500 kilometres from the telescope any object passed 300 kilometres is in perfect focus for the hubble if it looked at an object at a distance of 200 kilometres when focused to infinity it would look a little out of focus but there is nothing to look at closer than infinity for the Hubble if you have a little telescope at home and focus it on an object 2 kilometres away it is now focused to infinity. Just try and you will see. A little 2.5-inch objective will be focused for infinity at a distance of 2 kilometres so at a distance of 4 kilometres the focus will be of axis by no more than 2.5 inches which is non desernabal.
Again the Hubble mirror was screwed up as in not perfect. You seem to be creating a new reality
.......In actuality it was working perfectly when orbiting over the Kremlin. So you seem to be in denial of what is really happening and or happened.
the knuckleheads doing the math really screwed up huh,
Again the Hubble mirror was screwed up as in not perfect.
Quote from: Europa on 20/07/2021 01:55:16Again the Hubble mirror was screwed up as in not perfect. The focus was fine, but the mirror had not been ground to a parabola.
Actually because of the mirror flaw the software was not able to achieve a focus, at least that is what we were told. I still say that the mirror was fine when pointed at the Kremlin which was the purpose. But people like you think that blurry images of nebulas were important
Quote from: Bored chemist on 20/07/2021 08:37:08Quote from: Europa on 20/07/2021 01:55:16Again the Hubble mirror was screwed up as in not perfect. The focus was fine, but the mirror had not been ground to a parabola.Actually because of the mirror flaw the software was not able to achieve a focus, at least that is what we were told. I still say that the mirror was fine when pointed at the Kremlin which was the purpose. But people like you think that blurry images of nebulas were important
I still say that the mirror was fine when pointed at the Kremlin which was the purpose.
Quote from: Europa on 20/07/2021 19:55:53Actually because of the mirror flaw the software was not able to achieve a focus, at least that is what we were told. I still say that the mirror was fine when pointed at the Kremlin which was the purpose. But people like you think that blurry images of nebulas were importantCan you explain how it is possible for the earth to be in focus but not the stars? Optics with misshapen lenses are no good at any distance.
Quote from: Europa on 20/07/2021 19:55:53I still say that the mirror was fine when pointed at the Kremlin which was the purpose.You can buy a postcard of the Kremlin with a better picture than you could get from Hubble.
why do you speculate that the images would be inferior to any other spy satellite of the era?
Quote from: Just thinking on 20/07/2021 20:02:00Quote from: Europa on 20/07/2021 19:55:53Actually because of the mirror flaw the software was not able to achieve a focus, at least that is what we were told. I still say that the mirror was fine when pointed at the Kremlin which was the purpose. But people like you think that blurry images of nebulas were importantCan you explain how it is possible for the earth to be in focus but not the stars? Optics with misshapen lenses are no good at any distance.Hubble was a camera the mirror was only one part, lenses and computer software and a CCD were all required for focus and image captureNext
Hubble was a camera the mirror was only one part, lenses and computer software and a CCD were all required for focus and image captureNext