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ncc1701d
Hello,
Anybody know off hand where I can find the raw non false colored nasa images taken of the Venus Clouds from past probes? I have seen some here and there on the internet but looking for the best original source that have not been tweaked or scaled or colored by others. thanks
Phil Stooke
Google took me right here.

http://www.astrosurf.com/nunes/explor/explor_pvenus.htm

But the ultimaste archive in the National Space Science Data Center is here:

http://nssdc.gsfc.nasa.gov/nmc/datasetDisp...o?id=PSPA-00346

Where you will learn that the data are archived as photographic negatives. The raw data are not available online, as far as I know. This was the world before the internet - or at least before universal access. As a very low science priority, it has never been put online.

Phil

mcaplinger
Mariner 10 or Messenger flyby imaging is probably more accessible than PV data.
http://pds-imaging.jpl.nasa.gov/volumes/mess.html for Messenger.
ncc1701d
QUOTE (mcaplinger @ Jun 29 2013, 10:35 PM) *
Mariner 10 or Messenger flyby imaging is probably more accessible than PV data.
http://pds-imaging.jpl.nasa.gov/volumes/mess.html for Messenger.

great suggestions to all. Thank you.
4throck
Just to say that I've updated my astronomy page and some links have changed.

The Pioneer Venus images are now displayed with image number, code and date.
Processing is minimal, just histogram equalization of the scans.

There are a few more Pioneer Venus images online, but I've been unable to identify them.

http://www.astrosurf.com/nunes/explor_pvenus.html
tedstryk
A big problem is that almost all the released imagery is from 1979-1980, despite the fact that PVO imaged Venus through most of the 1980s if not into the 1990s (I can't find any documentation of images being taken after 1988, but I can't find anything to suggest that they stopped either). With the exception of very poor reproductions of some 1985 images (bad photocopies), I've never seen anything beyond 1982. Between the Pioneer 10/11 digital data and PVO digital data (and any form of data from later in the mission), this is one of the biggest holes in the available record of planetary exploration. Even the Venera-9 orbiter dataset is easier to come by (although it is tiny).
4throck
I have a few more images I can add for completeness sake.
For example, this paper shows images 38 and 45:
http://eaps4.mit.edu/research/papers/Travis_etal_1979a.pdf

But again, the data if from early on the mission.
JRehling
This is great, 4thRock. I've just had my first tries at photographing these details in UV from Earth, and I'll be back at it next summer, when Venus is better placed for Northern Hemisphere observers. Personally, I found that a clearer image comes from subtracting a visible-light image from the UV image, to reduce the information due to phase angle effects and emphasize the information due to the UV absorber. These PVO images were so great for their time and are still inspirational.
rlorenz
More on other data than images, but still pertinent. My review of past claimed detections and nondetections of lightning on Venus is out in PEPS (Open Access)

https://rdcu.be/1iaR

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