Venera Images, VENERA 13 fully calibrated image |
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Venera Images, VENERA 13 fully calibrated image |
 Jan 12 2006, 05:53 PM
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#76
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 Senior Member  Group: Members Posts: 2454 Joined: 8-July 05 From: NGC 5907 Member No.: 430  |
QUOTE (BruceMoomaw @ Jan 11 2006, 08:47 PM) Yes, the first shots of Venus from Venera 9 and 10 turned out to be remarkable for their sheer ordinariness. Not only was there no super-refractive "swimming pool effect" (which had recently become a staple of SF stories about the planet; John Varley's first published story used it and was called "In the Bowl"), but even in those grainy photos it was clear that the horizon was fairly sharp and that the shadows even of small pebbles, despite the dense atmosphere, were quite sharp. In fact, the Soviets had equipped the two landers with floodlights on the assumption that the solar illumination might be too dim to see the surface otherwise! The much better photos from Venera 13 and 14, of course, confirmed all this even more dramatically (and also revealed that fiery orange sky, although I don't know whether that color was predicted in advance).  The big reason Soviet scientists thought Venus would be so dark at its surface is that the Venera 8 lander reported dim lighting conditions in 1972. Venera 8 did this with cadmium sulfide photoresistors (try to fit that phrase into your next dinner conversation), as it carried no cameras. But what they did not seem to take into account was that the Sun was only 5 degrees above the horizon at the Venera 8 landing site when the readings were taken. ftp://ftp.seds.org/pub/info/newsletters/e...93/jasa9303.txt -------------------- "After having some business dealings with men, I am occasionally chagrined,
and feel as if I had done some wrong, and it is hard to forget the ugly circumstance. I see that such intercourse long continued would make one thoroughly prosaic, hard, and coarse. But the longest intercourse with Nature, though in her rudest moods, does not thus harden and make coarse. A hard, sensible man whom we liken to a rock is indeed much harder than a rock. From hard, coarse, insensible men with whom I have no sympathy, I go to commune with the rocks, whose hearts are comparatively soft." - Henry David Thoreau, November 15, 1853 |
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Jan 23 2006, 05:08 PM
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#77
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Senior Member Group: Members Posts: 2454 Joined: 8-July 05 From: NGC 5907 Member No.: 430 |
Soviet Veneras and Mars: first entry probes trajectory reconstruction and science
Viktor Kerzhanovich, Jet Propulsion Laboratory, Pasadena, CA, USA Konstantin Pichkhadze, Lavochkin Association, Moscow, Russia Presented to International Workshop on Planetary Probe Atmospheric Entry and Descent Trajectory Analysis and Science Lisbon, Portugal, 6-9 October 2003 http://trs-new.jpl.nasa.gov/dspace/bitstream/2014/37338/1/03 Though most of the data and probe images are on the Veneras, there are some very nice diagrams of Mars 3 and 6 and data charts on the Martian atmosphere from Mars 6. -------------------- "After having some business dealings with men, I am occasionally chagrined,
and feel as if I had done some wrong, and it is hard to forget the ugly circumstance. I see that such intercourse long continued would make one thoroughly prosaic, hard, and coarse. But the longest intercourse with Nature, though in her rudest moods, does not thus harden and make coarse. A hard, sensible man whom we liken to a rock is indeed much harder than a rock. From hard, coarse, insensible men with whom I have no sympathy, I go to commune with the rocks, whose hearts are comparatively soft." - Henry David Thoreau, November 15, 1853 |
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Jan 23 2006, 06:07 PM
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#78
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 Interplanetary Dumpster Diver Group: Admin Posts: 4404 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
Great find! I had seen the Mars 6 stuff in an old 1977 paper he wrote in Icarus, but good to see that the dataset is being presented again. Regardless of overall value, it is the first in situ data (other than the mysterious Mars 3 blurb) from the Martian atmosphere and there are only five other decent profiles in existence - it would be a pitty for it to be totally forgotten.
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Jun 3 2006, 08:34 PM
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#79
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Senior Member Group: Members Posts: 2454 Joined: 8-July 05 From: NGC 5907 Member No.: 430 |
Found this Soviet document from 1969 on their Venera missions up to
Venera 6. Some nice and uncommon (for the West) artwork and diagrams: http://epizodsspace.testpilot.ru/bibl/venera/obl.html This whole site is a gold mine of old and not so old Soviet space books and documents - most of it in Russian, oddly enough: http://epizodsspace.testpilot.ru/bibl/biblioteka.htm http://epizodsspace.testpilot.ru/bibl/oblojki/oblojki.html -------------------- "After having some business dealings with men, I am occasionally chagrined,
and feel as if I had done some wrong, and it is hard to forget the ugly circumstance. I see that such intercourse long continued would make one thoroughly prosaic, hard, and coarse. But the longest intercourse with Nature, though in her rudest moods, does not thus harden and make coarse. A hard, sensible man whom we liken to a rock is indeed much harder than a rock. From hard, coarse, insensible men with whom I have no sympathy, I go to commune with the rocks, whose hearts are comparatively soft." - Henry David Thoreau, November 15, 1853 |
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| Guest_DonPMitchell_* |
Jun 4 2006, 03:13 AM
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#80
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Guests |
QUOTE (ljk4-1 @ Jun 3 2006, 01:34 PM) Found this Soviet document from 1969 on their Venera missions up to Venera 6. Some nice and uncommon (for the West) artwork and diagrams: http://epizodsspace.testpilot.ru/bibl/venera/obl.html This whole site is a gold mine of old and not so old Soviet space books and documents - most of it in Russian, oddly enough: http://epizodsspace.testpilot.ru/bibl/biblioteka.htm http://epizodsspace.testpilot.ru/bibl/oblojki/oblojki.html Yep, that site has been around for some years. Sergey Khlynin did most of the work. He's been a big help to me in my research, especially making some special high-res scans of rare photos. |
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Sep 11 2006, 04:15 PM
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#81
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 Member Group: Members Posts: 370 Joined: 12-September 05 From: France Member No.: 495 |
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Sep 11 2006, 07:23 PM
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#82
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 Senior Member Group: Members Posts: 2492 Joined: 15-January 05 From: center Italy Member No.: 150 |
To many things are happening today...
These Venera(ble) images are breathtaking  , I'm impressed by the atmosphere transparency...Beautiful! We must send a MER (VER) there... 
-------------------- I always think before posting! - Marco -
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Sep 11 2006, 10:10 PM
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#83
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 The Poet Dude Group: Moderator Posts: 5551 Joined: 15-March 04 From: Kendal, Cumbria, UK Member No.: 60 |
Congratulations on being featured on SPACE.com Don! About time your fantastic images were seen by a wider audience. The one of the hills is literally breathtaking.
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Sep 11 2006, 11:17 PM
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#84
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 Senior Member Group: Members Posts: 2918 Joined: 14-February 06 From: Very close to the Pyrénées Mountains (France) Member No.: 682 |
QUOTE (Stu @ Sep 12 2006, 12:10 AM) The one of the hills is literally breathtaking. Yep! Here too, we can near rim, far rim and far-far rim  Seriously, been used of the original pictures, I've got the feeling to discover a new word. Kind of going from "Phil's polars" to Dilo's, Midnigth Mars, etc... Thanks so much and congratulations Don. -------------------- |
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Sep 11 2006, 11:52 PM
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#85
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Interplanetary Dumpster Diver Group: Admin Posts: 4404 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
Congratulations! It is great to see the images in a human perspective.
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| Guest_DonPMitchell_* |
Sep 11 2006, 11:58 PM
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#86
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Guests |
Thanks guys. NBC picked up the story too (MSNBC). Interesting to see how they fiddled with Leonard's wording and my quotes, and kind of broke most of them. :-)
I'll add a blog entry on my site with a little more explaination about the images. |
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Sep 12 2006, 01:03 AM
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#87
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Member Group: Members Posts: 166 Joined: 20-September 05 From: North Texas Member No.: 503 |
Don,
Those old Venera images were always appreciated for the close up views of the rocks scattered around the landers. But after viewing your versions, with hills and real horizons, Venus has become a real PLACE for me, just as Gusev and Meridiani are real places. Thanks so much. Your efforts are really appreciated. David |
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| Guest_DonPMitchell_* |
Sep 12 2006, 01:28 AM
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#88
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Guests |
Thanks, it was an afterthought really, but I'm glad I did it. My brain definately sees the terrain better in perspective, even though I am not seeing an new pixels.
I added a little extra info about the project on my blog: Venus in Perspective |
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Sep 12 2006, 02:26 AM
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#89
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 Senior Member Group: Members Posts: 3419 Joined: 9-February 04 From: Minneapolis, MN, USA Member No.: 15 |
Yes, thanks, Don! In particular, the "hills" remind me a lot of a lava dike that has breached and allowed a fan-shaped flow of lava to come in and pave the area upon which the lander sits.
Fascinating place! -the other Doug -------------------- “The trouble ain't that there is too many fools, but that the lightning ain't distributed right.” -Mark Twain
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Sep 12 2006, 03:01 AM
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#90
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Senior Member Group: Members Posts: 1636 Joined: 9-May 05 From: Lima, Peru Member No.: 385 |
I was delighted to see Don's Pictures. I couldn't believe it since I have seen a partial picture. Below the Venusian atmosphere looks so transparent even many kilometers.
Rodolfo |
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