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Why can't they just hold the camera up to the window instead of doing an EVA? They've probably already done this.
"The only portholes on unused CBM ports that are currently NOT covered with a CBCS flap are the Node 2 nadir and zenith ports - so these are the only CBM hatch portholes that the crew can "see" out of (and there isn't really much to see out of the Node 2 zenith porthole - except the blackness of space)."
This is an intriguing idea, Gary. And you’ve made an interesting observation here — one of our plans is to, at times, flip the camera around to look back into space. This way, when cloud cover is extremely dense, we hope to capture imagery of outer space. And perhaps, the moon : )
This photo was taken on September 5, 2012 using a Nikon D2Xs.
1/500 ƒ/11 ISO 200 10.5 mm
Originally posted by GaryN
The only way to get a good image of the Sun would be to use a neutral density filter,
Originally posted by GaryN
Can you find me images of sunspots from the ISS, or a nice conjunction? Thanks.
Originally posted by GaryN
Most 'light' I believe is travelling in the vacuum as planewaves, which our eyes can not see, at any wavelength. It requires gratings to convert the wave fronts to the transverse EM our eyes, or a regular camera that mimics our eyes can see, but in the case of being able to see stars from Earth, it is the ionosphere which provides the method of creating the transverse waves.
Pettit describes the camera system: "I'll be using a high-end Nikon D2Xs camera and an 800mm lens with a full-aperture white light solar filter."
SO how could the Astronauts see the Moon when traveling towards it and the Earth when they looked back or stars on the way to the Moon
Originally posted by GaryN
SO how could the Astronauts see the Moon when traveling towards it and the Earth when they looked back or stars on the way to the Moon
That's easy, the stars are 10 times brighter when you are in deep space.
But you maintain that the human eye cannot see light outside of an atmosphere or ionosphere. So how could the astronauts see the stars, Earth and the Moon?
But you maintain that the human eye cannot see light outside of an atmosphere or ionosphere. So how could the astronauts see the stars, Earth and the Moon?
Would you care to explain?
At the time the SEC tube had a DOD security classification as befitted such a device. Since
there were no other device that could possibly meet the Apollo TV camera mission requirement
to operate unattended at both lunar day and lunar night and survive all phases of the Apollo mis-
sion, the DOD was asked to allow Westinghouse to use the SEC tube for the Apollo TV Camera
program.
There were experiments in low light photography from lunar orbit, chiefly because that would allow them to survey the night side of the Moon.
Quantum camera a sophisticated new way of taking pictures
"With some elegant implementations, the ghost image [is] indistinguishable from a photograph," said Meyers, who has been involved in the field since 2006, when he produced the first ghost image of a remote object at the Army Research Lab.
The sunlight was apparently bright enough to burn out the Apollo 12 video camera:
Originally posted by GaryN
A couple of papers on the low light surface conditions. Maybe they were in bright sunlight some times, but I haven't found any papers about problems with bright light conditions.
That could be called a problem, right?
The TV camera was removed from the LM for deployment on the surface. However, during the transfer, the camera was accidentally pointed at the Sun or the Sun's reflection on the descent stage and the vision tube apparently burned out. This ended the TV coverage of the lunar surface activities.
Stars are not dramatically brighter in space (above the Earth's atmosphere). Professional astronomer and two-time space shuttle astronaut Ronald A. Parise stated that he could barely see stars at all from space. He had to turn out all of the lights in the shuttle to even glimpse the stars.
Originally posted by GaryN
What about the far side of the Moon? Looking into the instruments used to 'image' the far side, it appears they all use IR and UV spectography and a laser altimeter, therefore are not photos. I was going to ask why there are no videos of the far side, but it seems there are! MoonKAMs were sent up on the GRAIL mission craft, and will be used so school students can pick a feature to observe when the camera is in the right place, including the far side. So that blows my theory you might say, but I still have one bullet left in my gun. How does the MoonKAM work? There is some info, but no details, and I believe the devil is in the details of this camera. Or maybe I should say the Military is in the details, as the only possible technology that I think could get the video would rely on Quantum Optics, yes, a sci-fi idea that seems like it really does work.
Originally posted by GaryN
What about the far side of the Moon? Looking into the instruments used to 'image' the far side, it appears they all use IR and UV spectography and a laser altimeter, therefore are not photos.
Originally posted by GaryN
The only window they can see out of is the Cupola, and because of the way the ISS is oriented, they can only have a very limited view, mostly of the Earth of course