AerospaceFan From , joined Dec 1969, posts, RR:
Reply 5, posted (7 years 5 months 1 week 1 day 12 hours ago) and read 2897 times:
Agreed, Dfw! The MRO is really amazing. I've been following the mission since before its launch. (Apollo 12 astronaut visits Surveyor; notice also the manned lunar lander in the background.)
What I would like to do is find Victoria Crater on a large-scale map of Mars. At half and mile across, it must be fairly small; to see something as small as the Rover next to it really boggles the mind!
We can even see the Rover's shadow!
Truly amazing. Way to go, NASA!
(Also, imagine what we could see if we outfitted a space probe with the MRO's HiRISE camera and sent it to lunar orbit to photograph the various Apollo Lunar Excursion Module landing gear remaining on the surface. It would put those silly "manned lunar landing hoax" theories to rest once and for all. (Except that hoax-believers would probably think that the images from such a mission were faked. Sigh.) )
(By the way, some of my very favorite space photographs are the ones taken by one of our astronauts of another astronaut standing next to an unmanned lunar probe (a Surveyor) that had landed on the Moon a few years prior. Incidentally, a part from that probe, which had stood for years baking and freezing in the vacuum of the Moon, was removed and taken back to Earth, where micro-organisms, probably from post-return Earthly contamination, were discovered on one of its surfaces. Here is an example of one of those photographs:
(Apollo 12 astronaut next to the Surveyor; also notice the Apollo lunar lander in the background.)
In years hence, if Project Constellation reaches fruition, we could have similar photographs of human artifacts on Mars!)
AirSpare From United States of America, joined Jun 2006, 589 posts, RR: 6
Reply 6, posted (7 years 5 months 1 week 1 day 8 hours ago) and read 2869 times:
The Rover NAVCAMS are based on a Carl Zeiss Biogon formula (late 1930s design IIRC, common at 21mm and 35mm) and the Hologon formula (usually seen at 16mm in 135mm format, designed in 1962) hybrid.
Incredible lens formulas, the 21mm F4.5 was a breakthrough, even with the "first" generation of pre and post war "T" coatings, 45 year old Zeiss lenses still perform very well compared to modern glass.
Thorny From , joined Dec 1969, posts, RR:
Reply 7, posted (7 years 5 months 1 week 1 day 5 hours ago) and read 2854 times:
Quoting AerospaceFan (Reply 5): Also, imagine what we could see if we outfitted a space probe with the MRO's HiRISE camera and sent it to lunar orbit to photograph the various Apollo Lunar Excursion Module landing gear remaining on the surface.
A camera with roughly similar capability will be on NASA's Lunar Reconnaisance Orbiter (LRO) in 2008, and LRO will be closer to the surface.