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Space Forum / Shuttle / October 2008Did Phoenix take any video?
Just curious. Did the Phoenix take any video on the Mars? I googled a little, but didn't find any. If it was not designed to take any videos, why? Author schreef: > Just curious. Did the Phoenix take any video on the Mars? I googled > a little, but didn't find any. > > If it was not designed to take any videos, why? Rocks don't move around a lot. > Author schreef: > [quoted text clipped - 4 lines] > > Rocks don't move around a lot. Yabbut the Martians do .... > Just curious. Did the Phoenix take any video on the Mars? I googled > a little, but didn't find any. > > If it was not designed to take any videos, why? Closest thing to video I have seen is a fairly fast sequence of still shots of a dust devil that, when shown in sequence made a decent movie of the dust devil moving across the Martian surface. The two MER rovers have made similar shots. I would estimate the frame rate at something on the order of 1 frame/sec. Aside from the occasional dust devil there is precious little on the surface of Mars moving fast enough to warrant video. Probably next down the list of things to watch would be the motion of celestial bodies, and these move so slow to be more than adequately covered by time lapse still photography. The other thing about video is the bandwidth requirements. Current generation RF uplinks would be very hard pressed to keep up with the bandwidth requirements of decent resolution/frame rate video. Best you could hope for would to take a bit of video, store it and uplink it non-real time. Would take up lots of memory and uplink time which would reduce the amount of bandwidth available for science data. Future generation landers/rovers/probes may have access to optical data uplinks that would have much more generous available bandwidths. > Aside from the occasional dust devil there is precious little on the > surface of Mars moving fast enough to warrant video. I *think* that this thread was begun because they THINK they have pictures of what may be snowflakes. Having video would have been great to watch them float/fall down. I suppose it would depend on how fast and how many sequential shots were taken at any time. After all video is just sequential stills. Brian  SignatureBrian Gaff - briang1@blueyonder.co.uk Note:- In order to reduce spam, any email without 'Brian Gaff' in the display name may be lost. Blind user, so no pictures please! > >> Aside from the occasional dust devil there is precious little on the [quoted text clipped - 3 lines] > pictures of what may be snowflakes. Having video would have been great > to watch them float/fall down. >> Aside from the occasional dust devil there is precious little on the >> surface of Mars moving fast enough to warrant video. > > I *think* that this thread was begun because they THINK they have > pictures of what may be snowflakes. Having video would have been great > to watch them float/fall down. Esse, what's with the attitude? Actually, you *think* wrong. That's not why this thread was started. Also, they don't *think* they have pictures of snow falling. A laser particle detector found what they *think* to be snow flakes two miles above the lander, but these snow flakes are apparently sublimating before getting near the ground. This will probably change as we get further into the Martian winter and the lander may actually image snowfall. The problem is, before we get to the time where snowfall reaches the ground, the keep alive and do something useful power available may well be too low to be of any use. Brian SignatureBrian Gaff....Note, this account does not accept Bcc: email. graphics are great, but the blind can't hear them Email: briang1@blueyonder.co.uk ______________________________________________________________________________________________________________ >>> Aside from the occasional dust devil there is precious little on the >>> surface of Mars moving fast enough to warrant video. [quoted text clipped - 11 lines] > getting near the ground. This will probably change as we get further into > the Martian winter and the lander may actually image snowfall. > The problem is, before we get to the time where snowfall reaches the ground, > the keep alive and do something useful power available may well be too low > to be of any use. > > Brian Yes indeed, it will be a race. One night the available power goes to zero, the electronics box goes below -70ºC and the wirebonds break on the ICs and that's all she wrote. I really do hope we get to see some substantial snow accumulation before it dies. >The problem is, before we get to the time where snowfall reaches the ground, >the keep alive and do something useful power available may well be too low >to be of any use. ...Which will suck because I'd love to see the arm used to throw the first snowball on Mars :-) OM Signature]=====================================[ ] OMBlog - http://www.io.com/~o_m/omworld [ ] Let's face it: Sometimes you *need* [ ] an obnoxious opinion in your day! [ ]=====================================[ |
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