Magellan Options

[PhilHorzempa]

It is high time that we re-visited that most productive Venus
mission ever - Magellan.

I would hope that we could try to present the Radar Imaging
data in a more user-friendly manner. There are a few good sources
on the Internet, but much high-resolution material is either
in CD-ROMs or selectively printed in books or articles.

I have a handful of regional 1:1.5 million regional mosaics
from Magellan, in high-quality glossy. Scanning these would
be a challenge.

To start us off, here is the link to the best (in my opinion) source
of regional Venus views available on the Internet.

http://planetarynames.wr.usgs.gov/vgrid.html


On this site, you can click on any Quadrangle, from V-1 to V-62,
with the option for zoom. For you that thought that you knew Venus,
I urge you to explore this site for a chunk of time and be amazed
by the varied Geology of Venus. It begs to be explored in more detail.


Another Phil

[Phil Stooke]

I've begun using Magellan data to make maps of Venera landing sites. Somebody was asking about them recently. I'll post some here as I do them. First up is this:



Phil

[Guest_DonPMitchell_*]

The Magellan data is all on line here: PDS

A great article about the Soviet landing sites is the paper by Abdrakhimov and Basilevsky, "Geology of the Venera and Vega Landing-Site regions", Solar System Research 36(2), 2002. They use Magellan images, the lander images, gamma-ray spectrometery and x-ray fluorescent analysis data to propose the most likely regions and terrain types that have been sampled.

Venera-8 is one of the more interesting sites, with its unusual granite-like gamma-spectrum signature. Perhaps some older terrain?

[machi]

Little "spin off" of my next project and test of the Map-a-Planet application (I foolishly ignored this excellent site so long).
Maxwell Montes as an anaglyph:

[AndyG]

Majestic, Machi!

What a view!

Andy

[JohnVV]

There is also a reprocessed data set of the c1 compressed data
right now it is in the form of a celestia add on ,
http://www.celestiamotherlode.net/catalog/...p?addon_id=1070
-- Maxwell --
http://www.celestiamotherlode.net/catalog/...n_van_Vliet.jpg
-- a close up--
http://www.celestiamotherlode.net/catalog/...n_van_Vliet.jpg
-- and a close up of the close up --
http://www.celestiamotherlode.net/catalog/...n_van_Vliet.jpg

and a 16k grayscale map
http://www2.zshare.ma/z64e3f6ly9xr

But can be made available in ISIS3 cub format
mind you it is 131,072 x 65,536 px.

[machi]

Excellent map John but in full resolution it's too large for my computer.

Another interesting feature from Venus and appropriate place for future extreme skydiving.
South scarp of Eithinoha Corona with an extremely steep side. Drop is aproximately 4 km over distance less than 2 km.
In the radar picture scarp is practically vertical. Resolution is 106 m/pix.

Attached thumbnail(s)

 

[Phil Stooke]

Map-a-planet is really good for Venus - it's one of the easiest ways to get into the data at close to full resolution. I have found that a few of the image gaps can be filled by time-consuming searches of other map tiles in PDS, but otherwise the Map-a-planet data are great.

Phil

[machi]

Map-a-Planet is fantastic, I'm using it daily for more than month.
I found that complete dataset or online search engine for Venus doesn't exists.
If one wants the best available data for Venus, then he needs to search in multiple sources
and even after that he cannot found them all, because all data are not available on net and/or are not even processed at all.

[JohnVV]

I found that complete dataset or online search engine for Venus doesn't exists.

it is here ( Magellan only )

http://pds-imaging.jpl.nasa.gov/data/
- MIDR data set in "SINUSOIDAL" format
http://pds-imaging.jpl.nasa.gov/data/mgn-v...-full-res-v1.0/
- Global Topography Data Record
http://pds-imaging.jpl.nasa.gov/data/mgn-v...y-v1.0/mg_3002/
-- and so on

it is not searchable , but it is mapped to "sinusoIdal" so it is easy to put together