Venera Images, VENERA 13 fully calibrated image |
![]() ![]() |
Venera Images, VENERA 13 fully calibrated image |
Oct 8 2010, 08:46 PM
Post
#121
|
|
|
Senior Member ![]() ![]() ![]() ![]() Group: Members Posts: 4521 Joined: 5-April 05 From: Canada Member No.: 227 |
Good suggestion, but the areas covered by these reprojected images would span at most a few tens of pixels in Magellan images, and at locations in the images uncertain by many tens of kilometers, so it is very unlikely that we could do something like that.
Phil -------------------- ... because the Solar System ain't gonna map itself.
|
|
|
|
Oct 9 2010, 07:00 PM
Post
#122
|
||
![]() Member ![]() ![]() ![]() Group: Members Posts: 486 Joined: 19-February 05 From: France, close to Paris (& 5mn drive from Meudon Observatory) Member No.: 172 |
A collection of surface panoramas: 180° for Venera 9 and 10, 360° for Venera 13 and 14. Reprojections are according to various suggestions on this forum. Horizon topography is probably not real, but due to inaccuracies of the reprojections (which are not strictly geometric anyway). Thanks for your contribution. You did an interesting work. The horizon of Venera 9 should be adjusted because the lander was sitting on a slope with a 20° tilt... |
|
|
|
||
Oct 10 2010, 12:57 AM
Post
#123
|
|
|
Member ![]() ![]() ![]() Group: Members Posts: 273 Joined: 21-April 05 From: Portugal Member No.: 347 |
It's not easy to extrapolate much from the Venera images. I'm yet to see a good geometrical correction of all the distortions.
Those "U" shaped strips are approximations, and looking at them I always have the feeling that the spacecraft is on lower ground relating to the horizon. The imaging system is similar to that of Viking, but the scanning is made at an angle in relation to the horizon. The Venera cameras were about 2m above the surface but, as you move from the center to the edges towards the horizon, the image looks like they were taken with a lower point of view (more like Pathfinder). All of this makes the horizon interpretation much harder. What looks like a slope might be an horizontal feature... -------------------- _______________________
www.astrosurf.com/nunes |
|
|
|
![]() ![]() |
|
Lo-Fi Version | Time is now: 25th May 2013 - 07:35 PM |
|
RULES AND GUIDELINES Please read the Forum Rules and Guidelines before posting. IMAGE COPYRIGHT |
OPINIONS AND MODERATION Opinions expressed on UnmannedSpaceflight.com are those of the individual posters and do not necessarily reflect the opinions of UnmannedSpaceflight.com or The Planetary Society. The all-volunteer UnmannedSpaceflight.com moderation team is wholly independent of The Planetary Society. The Planetary Society has no influence over decisions made by the UnmannedSpaceflight.com moderators. |
SUPPORT THE FORUM Unmannedspaceflight.com is a project of the Planetary Society and is funded by donations from visitors and members. Help keep this forum up and running by contributing here. |
|