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#61
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On 8 Jul 2006 14:13:20 -0700, "
wrote: No, I just want an answer to my question, why are there no stars in the background during the recent ISS/Shuttle space walk ?? I mean the cameras of today must be 10 thousand humdred million times better than the cameras of Apollo, why no stars ?? The same reason that there aren't stars in the Apollo photographs. The camera is set to photograph something pretty bright, and the stars are very dim in comparison. --- Replace you know what by j to email |
#62
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Jud McCranie wrote:
On 8 Jul 2006 14:13:20 -0700, " wrote: No, I just want an answer to my question, why are there no stars in the background during the recent ISS/Shuttle space walk ?? I mean the cameras of today must be 10 thousand humdred million times better than the cameras of Apollo, why no stars ?? The same reason that there aren't stars in the Apollo photographs. The camera is set to photograph something pretty bright, and the stars are very dim in comparison. --- That old NASA/Apollo infomercial argument about "no stars" being the norm wasn't valid in the beginning, and it certainly isn't valid now. The dynamic range(DR) of their Kodak film was in fact sufficient to have included a dozen or more items besides the moon and Earth, and of those CCD images of today are offering a good 32 fold better yet at having extended that DR capability that should knock our socks off with having unavoidably included a few stars, with some of those best performing CCDs being capable of offering better than a 100:1 improved DR ratio. Therefore, it is not the "10 thousand hundred million times better than the cameras of Apollo" as stipulated by "Secret237", but none the less it's an impressive improvement, though still offering somewhat less pixel density or population per mm capability since the positive transparency/slide film can be scanned down to something below a micron which is typically 10 fold better off than what the average camera lens can manage to transfer. Without having involved a narrow visual spectrum bandpass and/or at least that of a near-UV and UV cutoff applied to the lens, the likes of the bluish Spica and especially the far-blue, violet, near-UV and the considerable UV-a spectrum worth of those Sirius stars are going to be unavoidably showing up in those unfiltered images. So, besides the obvious planets that should have been available, such as in relationship to the physically dark lunar horizon; where the heck were the likes of Spica or Sirius throughout those NASA/Apollo missions? Besides a number of such stars, Venus should have been downright pesky in at least two of the Apollo missions, as unavoidably getting into several of those unfiltered Kodak moments. Seems that you'd also have wanted to have intentionally included the rather nearby impressive likes of Venus as could only have been included as easily photographed from the moon. After all, the average terrain of our moon is worthy of something similar to the likes of sooty coal, of 0.07 albedo and otherwise typically being illuminated at something less than a 45 degree of that raw solar influx (actually of most missions being accomplished shortly after sunrise, thus perhaps as little as 10 degrees above the horizon), of which unless looking towards the direction of the sun is going to photograph at a much darker amount of surface reflected light, and as only having been recorded as darker yet because of their having used a polarised optical element, whereas earthshine that's capable of being as illuminating as 76 fold greater intensity than moonshine should have given a few faint but otherwise easily recorded shadows within those primary solar shadows. Those well published images via "moonpans" of a typically 55% reflective lunar terrain that's rather similar to that of a guano island that has been artificially dusted with the likes of portland cement and cornmeal plus the available guano itself is not exactly what our moon should have looked like. The red white and blue American flags as having been Xenon lamp spectrum illuminated is yet another rather obvious photographic error that shouldn't need any further argument. Moon and Spica (first magnitude of 0.98) http://pages.prodigy.net/pam.orman/j...051225_02.html Date: December 25, 2005 Time: 6:35 a.m. MST Location: Phoenix, Arizona Camera: Olympus OM-1 35mm SLR on fixed tripod Film: Fuji Provia 100F slide Focal length: 600 mm (200mm lens with 3X tele-extender Apertu f/11 (effective f/32) Exposure time: approximately 1/2 second Scanner: Nikon Coolscan LS-2000 (cropped slightly) Sirius at a visual and terrestrial atmospheric filtered magnitude of -1.42 is essentially a humanly visual 2.44 magnitude brighter item than Spica, and if that same look-see at Sirius were having been photographed as from the physically dark lunar deck without optical filters (as NASA/Apollo claimed) is where it would be easily have been recorded as 10+ times again as vibrant as Spica would have recorded upon the very same Kodak film exposure, that's actually relatively sensitive to the near-UV and UV-a. Sirius being a G2V as opposed to the somewhat wussy Spica and of it's B1V spectrum is once again where that lack of an atmosphere and thus having absolutely no attenuated near-UV or UV-a as photon filtering is a pretty damn hard factor to ignore, which should therefore have offered a rather impressive vibrance of Sirius to behold, and otherwise unavoidable as to keeping such pesky bright stars continually out of frame. Although, it's only so much worse off for the task of having to keep the likes of other nearby planets and especially that of the 80+% albedo of Venus out of each and every one of those frames, and I believe we're talking about thousands upon thousands of such frames as being a rather neat trick. You see, or rather it's of what you folks simply don't humanly see, whereas the unfiltered Kodak eye does in fact perceive as it photographically should have recorded upon that Kodak film, a wider than human spectrum that's actually extremely sensitive to the near-UV and UV-a part of the starshine spectrums (including that one of our own star), as being of what really counts the most if taking those unfiltered pictures from the naked moon. Of those bluish bright stars like Spica and even the photographically brighter Sirius would each have delivered quite the added illumination benefit if those items were being photographed as optically unfiltered and from our physically dark and atmospherically naked moon. Would you folks like to see some other examples of our moon as having been photographed along with other planets and stars, or would you care to discuss the gamma and hard-X-ray aspects of our naked moon that's offering worse off radiation dosage than what the worse of our Van Allen belts have to offer? - Brad Guth |
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On 8 Jul 2006 22:15:18 -0700, "
wrote: I know this, I just want Brad to see this as well, after all, it is the truth that he's looking for. Sorry, I misunderstood. Come to think of it, there are no stars in the Gemini photos either! Hmmmmm.... --- Replace you know what by j to email |
#65
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![]() Brad Guth wrote: Jud McCranie wrote: On 8 Jul 2006 22:15:18 -0700, " Come to think of it, there are no stars in the Gemini photos either! Hmmmmm.... There should also have been other planets and multiple stars as easily depicted within those fairly recent MESSENGER images of their unusually naked Earth fly-by, as well as having such terrific CCD and optics as having easily incorporated that of our physically dark moon, at least from a little before and after having zoomed so quickly past mother Earth, as our physically dark moon would have been unavoidably in frame. - Brad Guth STILL no answer: "Why are there no stars in the background during the recent ISS/Shuttle space walk ?? " |
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#67
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![]() Once again you have tried to answer my question and I still do not see an answer. This time you even say that you have answered my question, when you have not. Jud did answer my question and here is what he said: The same reason that there aren't stars in the Apollo photographs. The camera is set to photograph something pretty bright, and the stars are very dim in comparison. Here is your answer, you answer with a question: Would you folks like to see some other examples of our moon as having been photographed along with other planets and stars, or would you care to discuss the lethal gamma and hard-X-ray aspects of our naked moon that's a bit worse off radiation dosage than what the worse dosage of our Van Allen belts have to offer? Since you do not seem to know I will tell you that you do not answer a question with a question, unless you do not understand the question. Then you go on with this crap: Because you're snookered and summarily dumb and dumber, as in totally dumbfounded beyond the point of no return. I see that your MIB as e-spooks have been quite active at bringing my PC/internet and Usenet access to a crawl once again. Do you folks think that's funny? Your continual infomercial-science basis of your buttology mindset worth of denial is in normal auto-denial mode, just like that of your good buddy and partner in crimes against humanity, GW Bush. And then more totally absurd junk that I should just delete that has nothing to do with what I asked Obviously you're going to reject upon all science regardless of wherever it comes from (even Kodak's physics of photons and of whatever's of their film hard-science that's 100+% replicated isn't good enough, is it?), the same as no matters how much WW-III takes as another bite out of humanity and away from whatever's left of our global warming fiasco, you're sticking to your perpetrated cold-war guns. Good boy! Obviously you've intentionally overlooked that little tricky part of f32 that was involved with obtaining that terrestrial image, that if obtained external to Earth's atmosphere you'd have to cut that same exposure by a least half again, thus we're talking at most 1/4 second at f32, and of course Spica being of such far-blue, violet and near-UV primary spectrum would have to be at the very least twice again as bright. Gee whiz, folks, I wonder what using f4 might otherwise do to the 100 ASA film shutter speed? I am not rejecting anything, I am not overlooking anything and then you mention something about a terrestrial image ... I never said anything about a terrestrial image, I never asked either. What terrestrial image ?? Totally absurd, as usual. Could that become 125th of a second at f4? Actually that previous example image using 100 ASA/ISO/DIN slide film was more than likely closer to being exposed as an f48 at 1/2 second, as due to the optical losses that may have been unavoidably imposing another half f-stop in addition to what the 3X tele-extender application itself represented, which by the way should also have further contributed to having attenuated the UV-a. Could it be that you know absolutely nothing about cameras, lens, filters and much less about film? HA, I am a photographer, astrophotographer as well. I can only further surmise that you're having Muslim for dinner, and not as any guest. The only thing I can think of to say to this is that you are a jack ass for saying something like that. Here is the answer to my question, because I do already know the answer and since you obviously do not READ THE TRUTH: The same reason that there aren't stars in the Apollo photographs. The camera is set to photograph something pretty bright, and the stars are very dim in comparison. This is an example of an answer, it is not the answer that I am looking for, but it is the answer that I expected. |
#68
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In article ,
h (Rand Simberg) wrote: *From:* h (Rand Simberg) *Date:* Sat, 08 Jul 2006 19:26:15 GMT On 8 Jul 2006 12:17:51 -0700, in a place far, far away, " made the phosphor on my monitor glow in such a way as to indicate that: I've been watching the Shuttle (STS-121) in orbit and docked with the ISS. The astronauts have begun their space walk and I've noticed that in all the video and still shots they are showing, there are no stars in the background. Why do you suppose that is ?? Well, duhhhh! They're obviously faking it on a movie set. With their top-secret zero-gravity machine. It's done in a pool of very clear water with no bubbles AT ALL !!!!!!! :-) Malcolm B |
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#70
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