
Originally Posted by
Spacewriter

Originally Posted by
jumpjack
Anyway, the best thing would have been to place a commercial $300 digital camera on the rover, and let it take some color snapshots: it wouldn't be very scientific, but it would have solved the "true-color" problem! When take snapshots of my room with my camera, they LOOK yellow, due to artificial light... but they ARE ACTUALLY yellow, my room IS yellow, as the artificial light IS yellow!
And if you think about it for a few minutes, maybe do a little reading up about just what is required to send delicate cameras to Mars, you'll figure out why your suggestion of a $300.00 camera is not well thought-out.
I used that simple sentence because I don't like reading long posts, and I think the other people don't, too, and anyway it was, IMHO, self explanatory.
Anyway, if you like reading...
A commercial 300$ camera would have been very useful to see which are "true colors" on Mars, as current non-professional digital camera uses one single CCD for the three RGB colors; this does not allow complex image processing, but it would also not allow calibration mistakes: it would be just like going to Mars with your camera, take some snapshots, and then look at them.
But, obviously, a commercial camera cannot be sent to Mars as-is, due to very hard environment conditions before the launch, during the launch, during the travel to Mars, during the landing on Mars, during the mission itself; each mission phase cause several problems to any scientific instruments, due to vibrations, acceleration, temperature changes, unpredictable events, un-maintenability, long-distance remote-control, and so on...
So, only the basic technology of a commercial camera should be used, we CAN'T just send a commercial camera on Mars: we should send a single-CCD-based camera, but the camera should have all the features to survive to all the foreseen (and even un-foreseen) conditions it will find during its mission.
Also, it shouldn't be the ONLY camera sent to Mars, the idea is to send it TOGETHER with highly-professional cameras (just like those ones actually there now).
(Should I go on? Ok...)
Obviously, not only the camera should be designed just for the mission: adding a new instrument to Spirit would require also re-designing the whole spacecraft and the rover, to ensure all the system will work fine: you can't just pick a camera at the local store and attach it to the rover.
Ok, I'm even bored of writing it.... :roll: Is it enough for you? Do you prefer a complete course for Aerospatial Graduation?... Sorry, I have no time to teach to you all about the Space, the Astronomy, the Physics, The Mathematic, the Chemistry a person must know to become a space-product designer; but I
could, if just I wanted.
The worst thing all of this story is that
The bad astronomer will say that
I should moderate my speaking when posting, after reading this post... :roll: